- 128 - Pacific War - Drive for Myitkyina , April 30 - May 7, 1944

Last time we spoke about Operation Reckless, Operation Persecution and the Japanese retreat in New Britain. General Douglas MacArthur unleashed his two amphibious assaults, opening up the Western New Guinea Campaign. Both Operation Reckless and Persecution achieved complete surprise upon the Japanese. Múltiple Japanese units already performing withdrawals were caught into a chaotic new flight when the allies landed and began seizing key territory such as Hollandia and Aitape. The Japanese commanders fell into disarray leaving some to seize command and order further withdrawals in the face of hopeless battles. Yet again, forces already used to retreating through rough terrain without adequate provisions, were hitting the jungle track. Morale was all but collapsing in New Guinea. Over on New Britain matters were similar as the Japanese continued to retreat under heavy pressure from American patrols. Competent commanders would lose their lives beside their men in another hopeless battle. 

This episode is the Drive for Myitkyina

Welcome to the Pacific War Podcast Week by Week, I am your dutiful host Craig Watson. But, before we start I want to also remind you this podcast is only made possible through the efforts of Kings and Generals over at Youtube. Perhaps you want to learn more about world war two? Kings and Generals have an assortment of episodes on world war two and much more  so go give them a look over on Youtube. So please subscribe to Kings and Generals over at Youtube and to continue helping us produce this content please check out www.patreon.com/kingsandgenerals. If you are still hungry for some more history related content, over on my channel, the Pacific War Channel you can find a few videos all the way from the Opium Wars of the 1800’s until the end of the Pacific War in 1945. 

Operation Reckless and Persecution were tremendous successes. There was very little opposition for the men advancing upon Hollandia, the Japanese simply did not even attempt to defend their well developed defenses there. The drive towards Hollandia’s airfields was led by the 1st Battalion, 186th regiment. From Leimok Hill to Brinkman’s Plantation, they did encounter opposition, but it was scattered and uncoordinated. Colonel Oliver Newman was very cautious, he believed thousands of Japanese were still around the airfields. Just before they came across the airfields, they found large, undefended Japanese supply dumps. This would be one of many Japanese supply dumps captured through the following days, as General Eichelberger recalled “There were more than six hundred supply dumps. There were clothing dumps as high as houses. There were ammunition dumps everywhere. There were pyramids of canned goods and tarpaulin-covered hills of rice which looked like Ohio haystacks. There were saki and beer. There were tons and tons of quinine and other medical supplies, which, as a result of our landing, never reached the Japanese troops at the front. I believe Hollandia was the richest prize—supply wise—taken during the Pacific War”. These types of discoveries indicated the Japanese were extremely desperate.

By May 4th, Major General William Gill’s 32nd Division had just arrived at Aitape to relieve the 163rd regiment, who were earmarked to take part in the next amphibious assault. The terrain, alongside the weather was dreadful at Hollandia, making it impossible to provide the needed airfields suitable for heavy bombers without some legendary engineer work. General MacArthur considered it necessary to seize and develop new heavy bomber airfields in the Wakde-Sarmi-Biak region in order to neutralize enemy bases in the western Caroline. To be honest given the track records of these amphibious assaults in causing absolute mayhem for Japanese commanders, forcing them to keep on running, it was a great idea to keep the pace up. With the knowledge General Tagami’s 36th Division was still in the region and that the enemy might still seek to reinforce that said area before the allies could land there, MacArthur initially planned to send the full 41st Division against Wakde-Sarmi on May 15th, once the Hollandia fields were ready to support the amphibious assault. However supply congestion at Hollandia’s beaches was thwarting such designs.

Admiral Barbey proposed that D Day be postponed until May 21 and gave two reasons for the postponement. First, tides would be higher in the Wakde area on the 21st than on the 15th. Second, postponement would allow orderly and complete preparations to be made. Congestion was severe at the Hollandia beaches, where the bulk of the 41st Division was to stage. Lack of lighterage and beach space, combined with an inadequate road net, hampered unloading of equipment, supplies, and troops which were pouring into the Hollandia area. The arrival of such supplies and units, some of which had to be reloaded for Wakde-Sarmi, seriously interfered with mounting the 41st Division. As such, General Krueger decided that the operation could be started no earlier than the 16th but that unless important strategic considerations dictated otherwise, the 21st would be much preferable. Additionally, a number of engineer and air force organizations were scheduled to arrive at Hollandia on the 12th, either for employment there or to be staged for Wakde-Sarmi. The shipping bringing these units to Hollandia was needed to support the Wakde phase of the new operation, which could not begin until the vessels were reloaded. As beach congestion at Hollandia remained a major problem, this reloading could not be accomplished quickly. It was therefore proposed that the Wakde landings be postponed at least another day to the 17th.

Although MacArthur initially approved the proposed delay, new aerial photography of the coastal area from Sarmi eastward to Wakde indicated the ground conditions of the region were not suited for heavy bomber airstrips. Thus MacArthur decided that the Sarmi portion of the operation should be axed and instead they would focus on Wakde Island slated for D-day May 17th. 10 days after the capture of Wakde, or as soon as the airfields were repaired, the allies would next hit Biak, where more suitable airstrip sites were known to exist. General Doe thus prepared the Wakde Landings, Codenamed Operation Tornado while General Fuller’s remaining regiments were expected to seize the airdrome areas on Biak.

Over on the other side, General Anami planned to send the 36th division over to perform an immediate counterattack against Hollandia, but was denied. General Adachi over to the east had more freedom to act. The 18th Army had found itself cut off from all provisions and supplies, thus deprived of every possibility of rejoining the 2nd Area Army west of Hollandia, for the crucial defense of Western New Guinea. Because of this Adachi reasoned the best move for his 55,000 troops was to perform some quick actions before their strength was sapped out. Thus on April 26th, Adachi ordered the 20th, 41st and 51st Divisions to prepare a counterattack against the enemy beachhead at Aitape. Adachi hoped such a bold action against his enemy’s rear might force a major diversion of the enemy eastwards, in turn hampering their drive against Western New Guinea. 

Now back in mid-February the Japanese were adjusting their forces in the Central Pacific. They had established the 31st Army in Saipan, formed around the 52nd and 29th Division, led by Lt General Obata Hideyoshi. The bulk of the 52nd division, led by Lt General Mugikura Shunzaburo had landed in Truk mid-February, Lt General Takashina Takesi’s 29th Division meanwhile were still in the progress of traveling to the Marianas, escorted by the destroyers Kishinami, Asashimo and Okinami. The bulk of the division departed Busan on February 24; but the convoy would be torpedoed some 200 km south of Okidaitōjima by the submarine Trout on February 28. The 18th Regiment, led by Colonel Monma Kentaro suffered 1657 deaths, including its commanding officer, and 570 wounded. Because of this the 18th regiment was landed at Saipan to recover; 50th regiment was diverted to land at Tinian under the command of Colonel Ogata Keiji and the 38th regiment was sent to Guam on March 4th.

Allied submarine interceptions of these troop movements was no mere coincidence. The submarine activities were frequently guided by 'Magic' intelligence relating to ship movements which was collected by intercepting and decrypting encoded radio transmissions. The IJN routinely broadcast the location and intended route of convoys under its protection, and decrypting these messages allowed Allied naval commanders to alert submarines in the vicinity of convoys. The submarine commanders were free to plan their interception and attack where conditions were most favorable. The IJN's faulty anti-submarine doctrine also contributed to Japan's shipping losses. The Navy had placed a low priority on protecting merchant shipping from submarine attack before and during the early years of the war and convoys were not routinely assembled until 1943. Vast swathes of Japanese shipping was being sunk in early 1944. There were two large reasons for this. Number 1) obviously the IJN was greatly diminished and thus allied submarines were operating further into enemy territory. Number 2) fixing the torpedo issue, yes those pesky Mark 14s/15s were now hitting hard and providing enormous results.

In response to this emerging crisis, the Japanese established the Grand Escort Fleet Headquarters, under the overall command of Admiral Oikawa Koshiro, to coordinate convoys and implement a standard doctrine. The first order of business was to increase the average size of Japanese convoys from 5 ships to "large" convoys of 10 to 20 ship in order to assign more escort ships to protect against enemy submarine activity. To further reinforce the Central Pacific, the Japanese also created nine expeditionary units from the forces of the 1st and 7th Kwantung and 8th Korean Armies. They also decided to assign the 14th and 43rd Divisions of Lieutenant-Generals Inoue Sadae and Saito Yoshitsugu to General Obata’s command, designated Truk Sector Group. To support them, the IJN decided to combine the 4th Fleet and the 14th Air Fleet on March 4th to form the Central Pacific Area Fleet, under Admiral Nagumo. Between March-April, the 31st Army was assigned the priority for shipping, so Nagumo would send a total of eleven large convoys collectively known as the Matsu Fleet to bring said reinforcements to the Central Pacific. Though the deadly American submarines would hunt relentlessly to prevent these reinforcements, they would only be able to sink the light cruiser Tatsuta, the destroyer Asanagi, six transports and one submarine chaser, so the Matsu Fleet was considered as largely successful. 

By mid-April the success of the Matsu Fleet allowed the IJN to allocate more shipping to the 2nd Area Army. Thus the Take-Ichi convoy was formed to carry the 32nd division of Lieutenant-General Ishii Yoshio and the bulk of the 35th division to Western New Guinea. The large convoy consisting of 15 transports was escorted by an unusually strong force under Admiral Kajioka consisting of minelayer Shirataka; destroyers Asakaze, Shiratsuyu, Fujinami and Kuri; Mikura-class escort ship Kurahashi; Type D escort ships No. 20 and No. 22; gunboats Ataka and Uji; minesweepers No. 22 and No. 101; and submarine chasers No. 37, No. 38 and Tama Maru No. 7. They departed Shanghai on April 17th enroute for Manila.

Unbeknownst to the Japanese allied code breakers were decrypting their radio signals and managed to figure out the convoys departure and arrival points. The Submarine Jack was given the coordinates and intercepted Kajioak’s convoy around nightfall of April 26th. Jack fired 19 torpedoes from long range, managing to sink the 5425-ton freighter SS Yoshida Maru No. 1, which was carrying the entire 210th Regiment of the 32nd Division. 3000 soldiers and their commander Colonel Koike Yasumasa all drowned with the ship. Its moments like these I always find myself taking a step back. Thousands of men fighting on all these islands in the Pacific, absolute carnage in places like New Guinea, Guadalcanal, later on Peleliu….one submarine and woosh, a regiment gone. The allied submarine campaign during the Pacific War, did a lion's share of work, horrifying work. War is a horrible thing. 

The remaining convoy ships continued to Manila, arriving there on April 29th. Upon reaching Manila, however, Lieutenant-General Ishii Yoshio learned that his 32nd Division was reassigned to the 2nd Army to further reinforce western New Guinea, so a new convoy of eight transports would resume the journey to New Guinea on May 1st, carrying the bulk of the 32nd and 35th Divisions. You can bet after hearing what happened to the 210th regiment on the Yoshida Maru, these men were dreading to sail again. They had every reason to feel that dread, as the American intelligence operators figured out the convoys departure and arrival information again. They pinpointed the convoys route, speed, daily noon positions, everything. This time the submarine Gurnard intercepted Kajioka’s convoy in the Celebes Sea on May 6. Gurnard's captain, Commander Herb Andrew  submerged his boat and made a cautious approach to avoid detection by aircraft. He reached a firing position 4 hours later and fired 6 torpedoes at 2 transports. Only 1 of these torpedoes struck its mark, and a 2nd salvo missed its intended targets but hit another transport. Andrews then turned his boat and fired further torpedoes from Gurnard's stern torpedo tubes which hit a 3rd transport. One of the Japanese destroyers then counterattacked Gurnard and forced Andrews to break off his attack. The destroyer was traveling at too great a speed for its detection gear to function, however, and did not damage the submarine, despite dropping approximately 100 depth charges. Two hours later, Gurnard rose to periscope depth and found that a major effort to rescue troops and equipment from the torpedoed transports was under way. That night, the submarine also torpedoed one of the crippled transports which was still afloat. In the end, its attack successfully sank transports Aden Maru (5,825 tons) and Taijima Maru (6,995 tons) as well as the cargo ship Tenshinzan Maru (6,886 tons).

Although the Japanese rescue effort was relatively successful, 1290 troops were killed, The 4th Independent Mountain Artillery Regiment was completely destroyed and much of their equipment was lost. 

 Due to these heavy losses, the Take-Ichi convoy finally docked at Halmahera on May 9th, where the remnants of the 32nd and 35th Divisions were ultimately unloaded. General Ikeda’s 35th division, including the 219th regiment from Palau were shipped over to Sorong, with the 219th left to guard the St.Andrew Strait Islands. General Ishii’s 32nd division, was retained at Halmahera to garrison the island. The terrible loss of the Take-Ichi convoy forced the Japanese leadership to acknowledge it was no longer possible to reinforce Western New Guinea, thus General Anami would have to fight with what he had on hand. Alongisde this, IJA General HQ decided to pull back the perimeter of the absolute defense zone in the southern area to a line extending from Sorong to Halmahera, with units at Geelvink Bay, Biak and Manokwari ordered to hold out as long as possible to delay the enemy advance. Anami did not like the orders one bit, as he belived the forward line should be aggressively defended to secure the valuable land holding air bases between Palau and Western New Guinea. What Anami was not aware of, was that the IJN combined fleet were preparing for the famed decisive naval battle in the area. This was part of Admiral Toyoda’s Operation A-Go. Under the plans elaborated by the Combined Fleet, the First Mobile Fleet, and the First Air Fleet were assigned the principal roles in the projected battle. The former assembled its surface strength at Tawitawi in the Sulu Archipelago on May 16th, while the land-based units of the First Air Fleet continued to be widely deployed in the Marianas and Carolines to take advantage of any tactical opportunity that might arise. Tawitawi was chosen as the main staging point for the First Mobile Fleet because of its proximity to both the refueling facilities of Balikpapan and the sea area which the Navy High Command expected to be the scene of the decisive battle.  It was also safely beyond the range of enemy land-based air power and afforded greater security against Allied intelligence than other anchorages in the Philippines.

Orders are orders, thus Anami ordered General Teshima to hold onto Geelvink Bay at all costs while also contuining to secure the Sarmi area as a lifeline for the 18th Army who were being cut off from east of Hollandia. While Admiral Ozawa’s 1st Mobile Fleet assembled its at Tawi Tawi for Operation A-Go and Admiral Kakuta’s 1st Air Fleet deployed its land-based units in the Marianas and Carolines, Admirals King, Nimitz and Spruance had also been planning their invasion of the Marianas, aiming to secure Saipan, Tinian and Guam as advance air and naval bases to allow striking of the Philippines, Formosa and Okinawa. After the landings at Hollandia and Aitape, Admiral Mitscher’s Task Force 58 realized there was very little opposition and he still had plenty of strength to continue operating. Thus Nimitz decided to carry out a preventive strike against Truk, to ensure that the Japanese would not be able to build up their air power before the Marianas invasion scheduled for June. 

Intelligence reports indicated that the Japanese had been rebuilding their strength at Truk. Indeed Truk’s air garrison had grown enough to be a concern again. By late March, 30 flyable Zero fighters had been pieced together from aircraft destroyed during the February raids. Additionally, aircraft were being withdrawn from bypassed bases in the Marshalls and sent to Truk. By April, the Japanese had 104 flyable aircraft at Truk: 6 G4M twin-engine bombers, 12 D4Y1s dive bombers/reconnaissance bombers, 13 B5N or B6N torpedo bombers, 55 Zero fighters, 10 J1N1 night fighters, and 8 floatplanes used for observation and reconnaissance. Moen No. 1 airfield housed the G4Ms and 20 Zero, while Eten had the rest of the Zeros and all the night fighters. The single-engine bombers, the D4Y1s, B5Ns, and B6Ns, were all at Param, with the floatplanes at Dublon. There were another 63 unserviceable aircraft scattered throughout Truk’s airfields.

Admiral Spruance’s 5th fleet would also conduct a bombardment of the Satawa and Ponape islands. On its return from Hollandia, Task Force 58 traveled to Truk, arriving shortly before dawn on April 30th and immediately tossed a fighter sweep consisting of 84 Hellcats. 5 Nakajima bombers from Param were aloft doing a dawn sweep, something that had become routine since February. Truk’s radar detected the inbound US aircraft when they were 30 minutes out, shortly before the scout’s interrupted radio report. The warning gave the Japanese ample time to launch air cover. Before the US fighters arrived, Moen No. 1 had scrambled 20 Zeros, Eten another 29, and Param its remaining eight Nakajima bombers. Yet the 57 Japanese aircraft were brushed aside, nearly 25 Zeros were shot down at the cost of 2 Hellcats. Just like we saw in February, Task Force 58 began staggering air strikes throughout the day. The carriers launched full deckloads seeing fighters, dive bombers and torpedo bombers continously over Truk for the entire day. Task Force 58 performed 2,200 bomber sorties, 467 of which were flown by fighters carrying bombs. In all, US Navy aircraft dropped 748 tons of bombs during the two-day operation. The Hino Maru No. 2, a 1,500-ton cargo ship and auxiliary gunboat, was hit and heavily damaged by a bomb by an Avenger from USS Cabot during the attack’s first day. It sank four days later on May 4. The Sapporo Maru, a 600-ton auxiliary provision stores ship, was bombed on April 30 and sank north of Fefan. The 300-ton auxiliary minelayer Minsei Maru and 20 other craft were also destroyed in the harbor during the two days of raids. While a small haul when compared to February’s results, these losses further reduced the number of vessels remaining in Truk Atoll. This increased the difficulty of moving supplies and personnel between the different islands in the lagoon, further decreasing Truk’s usefulness as an outpost. Additionally, the Japanese submarine I-174 was detected 20 miles south of the atoll on May 1. Aircraft from the light carrier Monterey teamed up with the destroyers MacDonough and Stephen Potter to sink the submarine. Whether the submarine was fleeing Truk or heading back to it after a patrol is not known. Its loss contributed to the decision to abandon Truk as a submarine base later in 1944. The Japanese losing 23 auxiliary vessels and one submarine, but this time the American bombers also targeted Truk’s shore facilities, giving special attention to the airfields on Moen and Eten, the Dublon naval headquarters and oil storage tanks, and Fefen’s docks warehouses and ammo dumps. 

On the morning of May 1st, the Japanese attempted several straggling strikes against the American carriers, but none managed to cause any damage. The largest attack against the US fleet contained 8 bombers, D4Y1 dive bombers, and Nakajima torpedo bombers which survived the first day’s attack. They found Task Group 58.2 and Task Group 58.3 at 8:15am, making a series of attacks against aircraft carriers in both groups. Met by heavy antiaircraft fire, they were shot down, most before they could drop their torpedoes or bombs. Only one came close enough to drop a bomb, which fell near the Lexington but caused no damage. Task Force 58 contuined to pound Truk throughout the day before finally retiring towards Majuro during the night. Based on interpretation of post-strike aerial photography, US intelligence estimated 40 percent of the buildings on Dublon, 80 percent of those on Eten, 75 percent of those at Moen, 20 percent of the buildings on Fefan, 15 percent of those on Param, and 80 percent at Ulalu were destroyed during the airstrikes of April 30 and May 1. Roughly 423 buildings and six hangars were destroyed, 44 others were damaged, 59 Japanese aircraft were shot down, a further 60 were destroyed on the ground, 36 were left damaged, and only 12 were still flyable. All of this cost Mitscher 35 aircraft, with another 33 damaged. Furthermore, half the airmen shot down were rescued by planes or by submarines. 

Thus the threat posed by Truk was yet again neutralized. After this, Admiral Montgomery’s carrier group Task Force 58 was given orders to hit Minami Torishima and Wake Island for mid May. Leaving Majuro on May 15th, Montgomery assemled his forces about 420 miles southeast of Marcus Island on the17th. On the 19th, light carrier San Jacinto hunted for enemy picket boats north and west of Minami Torishima. At 7:28am a Avenger of VT-9 and a Hellcat of VF-9 found and attacked an enemy trawler 475 miles north of Marcus Island. They dropped their bombs and strafed it with machine gun fire. No direct bomb hits were obtained but the target was well covered with machine gun fire. The Japanese trawler was left dead in the water and down by the stern, with a 1/4 miles oil slick and debris behind it. No personnel were visible on the boat. Meanwhile fleet carriers Wasp and Essex launched a predawn fighter sweep. A flight of 4 night fighters launched at 5am from the Wasp on an intruder mission over Marcus Island, but the Essex had to cancel its flight of night fighters. At 11:15, another air attack commenced. Aircraft dove through antiaircraft bursts with bomb blasts occuring all over the island. At one time the entire island was completely smothered by smoke and dust, but the Anti-aircraft fire contuined undiminished. After the planes left, explosions and fires continued on Marcus Island for some time. They managed to inflict a moderate amount of damage to buildings, shot down one G4M and sunktwo small boats; ut the defenders’ anti-aircraft fire was ferocious, successfully shooting down 4 American planes and damaging another 69. On May 21st, San Jacinto rejoined the group and also reported sinking one sampan. Montgomery’s carriers then launched a series of composite carrier strikes against Wake on May 23, further damaging many installations there and sinking a slugger and three barges, at the cost of only one plane. But that is all for carrier actions today as we now need to jump oer to the Burma front.

General Stilwell was contuining his offensive, with the 22nd division advancing south towards Inkangahtawng. General Lioa’s 65th Regiment plus the 3rd Battalion, 66th regiment were advancing down the Kamaing road when they ran into Japanese resistance north and west of Inkangahtawng. The 64th regiment was kept behind to guard the Japanese flank until May 3rd, while the rest of the 22nd Division awaited better weather to perform a coordinated attack against the town. But this was Burma, and Burma is going to Burma. There was an outbreak of monsoons that quickly prevented the effective use of tanks and made supply movement over the Ledo Road a nightmare. By June about one inch of rain fell daily. Though supply convoys could still move from Ledo to Shingbwiyang, the combat trail from Shingbwiyang south was very difficult. The road was graded to Tingkawk Sakan known also as mile post 164 and metaled almost to Mile Post 138. However, rainfall had blocked the road over the flats north of Tingkawk Sakan. At the end of June the situation was unchanged. The Japanese stand at Kamaing and the heavy rains immobilized the survey party and the road trace. As the flood waters rose in the valley, they effectively barred armor from moving south to Mogaung or Myitkyina.

Thus on May 3rd, the 64th avaned east across the Kamaing Road to try and cut the trail 500 yards south of the Hwelon Hka. The next day presented clearer skies, so the Chinese troops initiated their attack. Once Inkangahtawn fell, the 22nd Division would hold the area for several weeks while the first elements of Lt General Pen Yukun’s 50th Division arrived to the front to reinforce them. To the east, General Sun’s 114th regiment were engaging General Tanaka’s 55th regiment along the Lahkraw Hka. To break the stalemate along the Lahkraw Hka, the Chinese 114th Regiment had to clear away the Japanese observation posts in the hills. The 1st battalion, 114th on the regiment's east flank cut around the flank of the 55th Regiment on April 28th, while the 2nd battalion, 114th pushed the same Japanese unit back a few hundred yards. This bending process continued during the next two days, and the 114th Regiment was well south of the enveloped Japanese flank and within half a mile of Wala. The 1st and 2nd Battalions of the 114th then began moving straight south, leaving behind them pockets of determined Japanese who held up the 3rd battalion, 114th. The Chinese managed to envelope the Japanese, pushing them all the way to Wala. The 113th Regiment also came back into line at the end of April to put frontal pressure on the Japanese positions along the Lahkraw Hka and Tigrawm Hka while the 112th Regiment held its salient without attempting to move. Though the Japanese managed to stabilize their lines on the creeks east and west of Wala, a company of the 114th would cross the Nawngmi Hka on May 6th, thus starting the advance southwards again. Two days later, the 114th's advance became general, while on the east, at Stilwell's order, the 112th began to gather its companies to take Warong. 

On the 9th, the 114th Regiment finally took East Wala and Hlagyi and subsequently linked with the 112th Regiment pushing south towards Warong. The 114th's penetration, driving deeper into the Japanese lines, began to approach the 112th's outposts just north of Manpin. By the 12th the 114th and 112th Regiments were able to maintain communications, with very few Japanese between them. The 114th's penetration further weakened the position of the Japanese facing the 113th Regiment, which in turn began to roll up slowly from east to west as its 1st and 2nd Battalions pressed on to Wala and Maran. Between the 28-30th, Merrills End Run Force began the long grueling advance upon Ritpong. K Force moved out on 28 April; H Force, on 30 April. The so-called trail over the pass was more nearly a route used by the Kachins; in some places there was no path. Twenty pack animals slipped and fell off the narrow, muddy way. It was a grueling march for men who had already marched 500 miles and fought several battles, most of the time on K ration. Before End Rrun Force reached Ritpong, it had only one contact with the Japanese. A few of the enemy were flushed from cover by the 1/88th, but it was feared the Japanese held Ritpong in strength. On May 5th, the Japanese 2nd Battalion, 114th Infantry Regiment made contact with the K Force at Ritpong, 16 miles northwest of Nsopsup, and a four day battle ensued. The Battalion was forced to withdraw to Tingkrukawng, about eight miles to the southeast. There, after several skirmishes, contact with the enemy was lost for a period of five days. On the 5th, when the leading elements of K Force were a mile from Ritpong, Colonel Kinnison began an envelopment to hit the village from north and south. The 3rd Battalion managed to cut its way through the woods and place itself across the southern approaches to Ritpong on the 6th. Meanwhile, the 89th Regiment tried to take Ritpong from the north but failed. Next day an American reinforced company attacked Ritpong from the south but was stalled by a machine gun nest. Merrills Marauders would block the trail to the south, while the 80th Regiment contuined to hit their enemy positions. As the Chinese captured Ritpong on the 9th, M Force had had one skirmish with Japanese, routed them, and begun to cut its own paths. The march was fatiguing in the extreme; fully half the animals died of exhaustion or fell into the gorges. The men were farther harassed by fevers and dysentery, but they were only two days behind H and K Forces

To the south, General Lentaigne’s Chindits were contuining Operation Thursday. Yet under the overall direction of Stilwell, the Chindits were no longer a “special force”, now they were line infantry tasked with the traditional role of advancing and seizing well defended objectives, for which they did not have the training nor equipment to do effectively. Brigadiers Brodie and Ricketts men covered the general Chindit movement heading north. The plan called for closure of Aberdeen, Broadway and White City before the Monsoon broke. It was now the turn of 14 Brigade to play a major role. The new Block near Hopin would cut the road and rail link to the town of Mogaung. Meanwhile Major Masters’ 111th Brigade began to establish the Blackpool Stronghold on May 5. The site was occupied on the night of May 5/6, and Masters spent the entirety of the following day setting up defenses. What he should have done was immediately attack the Japanese-held village of Namkwin just ahead of his positions. Instead, he busied himself with preparing the stronghold. It was a critical mistake, and says much about the lack of enterprise from the brigade. Blackpool Block was finally established on May 7th, with the King’s Own’s 46 Column the first to arrive at the site. They came under fire as they dug in. For the next 5 nights they would be attacked by a railway unit based out of Pinbaw.

The railway unit was using 105mm guns firing from up the valley, while troops from Pinbaw attacked for the next five nights, held at bay by the rifles and machine guns of the King’s own Rifles, and the mortars, which Masters had gathered from the battalions and wielded as single battery of eight. Despite the strong defense, in one section of the northern line nicknamed the “Deep”  which was the tip of the “boar’s nose,” the Japanese were as close as 10 to 20 yards from the wire. Enemy snipers took shots at anything that moved while the King’s own snipers and Bren gunners occupied hidden places among the shattered trees, firing whenever they saw the target, after which a cry would resound amid the quiet that followed: “got him!” The Japanese brought up a single 75mm artillery piece from Pinbaw, with which they shelled the camp, blasting the airstrip with impunity and setting the gliders and Dakotas on fire, until May 13 when Masters came into possession of three airlifted 25-pdr guns, allowing him to hit back. Overhead Cochran’s Air Commandos mounted sortie after sortie against the Japanese positions but it was clear they could not maintain the ante. The dark clouds of the monsoon were gathering in strength.

After the successful establishment of Blackpool, Brigadier Calvert’s 77th brigade began advancing north towards Mogaung on the 8th. The night night, White City was abandoned as Brigadiers Broddie and Ricketts marched north to defend Blackpool. On May 11th, Lt General Takeda launched an attack against White City, but was surprised to find it abandoned. It then advanced to the then-abandoned Broadway and onwards to the Namkwin area, where the Blackpool stronghold was located. Having rushed through empty Broadway and White City, the 53rd Division thus tore into the zone in strength. Takeda Kaoru’s 53rd Division began pursuing Broddie and Ricketts forces. For the next few days Master’s troops continued to repel increasingly stronger and stronger Japanese attacks. Masters quote “Where in the name of God were the floater brigades? White City had been evacuated 13 days earlier and 14th Brigade was supposed to come straight up here. My brigade had marched 140 route miles in 14 days to establish this block. Surely those bloody nitwits could cover 120 route miles in 13 days? Where the hell were they? Where were the West Africans?… 20 bloody battalions, 40 flaming columns of Chindit bullshit sat on their arses and drank eat and wondered how we were getting on.” In mid-May, the 3rd Battalion, 114th Regiment and 2nd Battalion, 146th Regiment tried to break through towards Kamaing and Myitkyina to reinforce Tanaka’s spent defenders and would join in on the attacks against Blackpool. The 2nd Battalion, 2nd Field Artillery Regiment would also support their attacks. The Japanese continued their efforts to quickly crush Blackpool Block. A Company-strength attack on May 14 was backed by artillery support. It was repulsed, the Japanese losing 60 killed. They returned the following morning, when another 50 were killed. Air strikes were called in to further punish the enemy. Then the monsoon took hold and air support and supply became more difficult – Lalaghat and Hailakandi were fair weather fields. The Japanese also retaliated through a single heavy mortar, firing 60lb bombs, note in comparison, Chindit’s standard 81mm mortar fired a 10lb bombs.

Delayed by the outbreak of the monsoons on May 15, the brigades of Brodie and Ricketts had managed to secure the vital Kyunsalai Pass, but they failed to get close enough to provide significant support for the stronghold. At the same time, the flooding of the Namyin river would leave Calvert’s 77th Brigade unable to aid Masters in the defense of Blackpool; and Morris Force, which had successfully cut the Myitkyina road, was too far to the east to come into the stronghold’s assistance. The monsoons had also hampered the airdrop of supplies, so the Chindits would have to make their five days’ rations last up to 14 days. Meanwhile, proceeding from Ritpong, K Force feinted towards the Japanese supply point at Nsopzup in order to attract the Japanese attention while H Force advanced directly to Myitkyina. 

On the 12th, Colonel Henry Kinnison’s Marauders engaged the 2nd Battalion, 114th Regiment, near Tingkrukawng. The Japanese at Tingkrukawng were strong enough to pin both of K force’s combat teams to the ground and then to halt the Chinese when they were committed. Attempts to envelop the Japanese failed. Since H Force was proceeding unmolested, Merrill told Kinnison to withdraw. K Force then picked up H's trail and followed it to Myitkyina. While K Force was fighting at Tingkrukawng, H Force kept on to a river just south of the village of Namkwi on the Mogaung-Myitkyina railroad and about two miles from the principal Myitkyina airstrip that lay almost due west of Myitkyina itself. Despite the several brushes with the Japanese, Kachin informants were sure that the Myitkyina garrison was not on the alert. To ensure surprise, before Colonel Hunter and his force bivouacked for the night of the 16th they rounded up the local Burmans and kept them under careful watch.

Kinnison would reach Hkumchet by the 17th, where the Colonel had to be evacuated because he had contracted a deadly mite typhus, dying shortly after with shocking speed. In all, 149 men contracted this little-known scourge. While M Force was about to reach Arang, H Force began an attack of Pamati and the Myitkyina airstrip on the 17th. The 150th Regiment was ordered to take the airstrip, while GALAHAD personnel took the Irrawaddy ferry terminal at Pamati. The other airstrip, north of the town, was left alone for the present. The attack went like a service school demonstration, for though the Japanese knew Myitkyina was in danger, the actual assault was a complete surprise. Colonel Maruyama, the Japanese commander, had two understrength battalions of the 114th Regiment in the town of Myitkyina and in its little suburb of Sitapur. There were 100 more men of the 15th Airfield Battalion on the north and south airstrips, 318 men from labor and service units on various details in Myitkyina, and 320 patients in a military hospital. Perhaps 700 able-bodied Japanese were present when the battle began. They took the Japanese by complete surprise and subsequently securing both positions. 

As soon as Hunter considered his hold on the major airstrip secure, he sent the prearranged code signal, “Merchant of Venice”, which meant the process of supply and reinforcement could begin. Consequently, some reinforcements began to be flown into the airstrip, though to the disappointment of General Merrill most of these were engineers and anti-aircraft instead of the needed infantry.  Back at his HQ, Stilwell was exultant. The brilliant seizure of the Myitkyina airstrip was the height of his career and the grand climax of the North Burma Campaign, as his forces had driven 500 miles into Burma and won engagements against seven Japanese regiments in the last six months. Stilwell’s triumph also came right on time, as American planners in Washington were beginning to adopt the British position suggesting an end to offensive action in north Burma. Stilwell's bold stroke at Myitkyina would instead see the Americans issue a directive encouraging Admiral Mountbatten’s command to exploit the opening of the Ledo Road and to secure enough of north Burma to protect the Allied hold on China’s lifeline.  

After the capture of the airstrip, Hunter immediately sent two battalions of the 150th Regiment to take Myitkyina. One battalion of the Chinese 89th Regiment, which had arrived from Ledo, would defend the air strip while two battalions of the 150th Regiment attacked Myitkyina. The other battalion of the 150th Regiment would be in reserve at the strip. They would encounter the 114th Regiment HQ and its 1st Battalion. As early as 1700 on 17 May Colonel Maruyama had also brought the 3rd Company, 148th Regiment, 56th Division, in across the Irrawaddy to reinforce Myitkyina. Following the wrong road, however, they went to Sitapur instead, where they were ambushed by the Japanese. On encountering Japanese rifle fire, they lost direction completely and engaged in fighting among themselves. Furthermore, some Marauders would continue toward Zigyun to secure the ferry crossing south of the city. On May 18, as more Chinese battalions were flown to reinforce the Chindits, the 150th again moved against Myitkyina; but repeating the mishap of the day before, the Chinese became confused, fought among themselves, and ultimately drove themselves right back out of the town. Nonetheless, the Siege of Myitkyina had just begun.

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The invasion of Hollandia and Aitape was such quick successes it allowed the Americans to bombard further islands. The Take-Ichi convoy improved the transportation of troops, but it also came at a horrifying cost. The loss of such shipping was yet again the paint on the wall for the Empire of Japan. Despite this the IJN was fully committed to forcing a decisive naval victory.