- 180 - Pacific War Podcast - The Allied Invasion of Borneo - April 29 - May 6, 1945

Last time we spoke about the invasion of Mindanao. In April 1945, the US launched the invasion of Mindanao under General Eichelberger, focusing on Illana Bay. Initial assaults were swift, and American forces quickly captured vital areas due to the disarray among Japanese troops, who were struggling with low morale and supply shortages. The Japanese were under significant pressure, with commanders ill-prepared to mount a robust defense as American troops advanced toward Davao. Fierce battles unfolded, including attempts to seize key positions, but Japanese forces, that included remnants from earlier campaigns, faced overwhelming and relentless assaults. Despite stiff resistance in some areas, the Americans ultimately made considerable territorial gains, significantly weakening Japanese positions. This successful operation in Mindanao laid crucial groundwork for further advances in the Pacific theater, marking a decisive phase in the war as the tide turned heavily in favor of the Allies. As this chapter closed, it was evident that the end of Japanese resistance in the region was drawing near.

This episode is the Allied Invasion of Borneo

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. 

A long time ago, in a galaxy far away we talked about the Japanese invasion of the Dutch East Indies. Now it is time to talk about how the Dutch strikes back. . . well not exactly, but I wanted to finish the star wars reference.

For an extended period, the Australian forces that had valiantly fought on the island of New Guinea during a crucial phase of the Allied war effort had been assigned to garrison duties in remote areas, conducting minor offensives against a desperate enemy more concerned with obtaining food than engaging in battle. At the same time, General MacArthur deemed it politically unwise for Australians to take a prominent role in reclaiming the Philippines, an American territory, and he also found it politically unfavorable for American troops to participate in restoring Dutch and British authority in the Indies. Recognizing the urgent need to secure the oilfields of British and Dutch Borneo to supply accessible oil for the push toward Japan, Lieutenant-General Leslie Morshead’s 1st Australian Corps was designated for the operation to retake Borneo, known as Operation Oboe. Should note that after a period of illness, suffering from malaria and a skin condition, the fighting General George Alan Vasey had finally recovered by February 1945. General Blamey, who still had doubts about his physical fitness despite Vasey being given an A by an Army medical board, reluctantly appointed him to command the 6th Division, then in action in the Aitape-Wewak campaign. Vasey then flew north to take up his new command. The aircraft Vasey was travelling in, RAAF Lockheed Hudson A16-118, took off from RAAF Station Archerfield on the afternoon of March 5, 1945. Due to a cyclone that was ravaging the Queensland coast at the time, the aircraft crashed into the sea about 400 metres out from Machans Beach, just north of the mouth of the Barron River, 2 kilometres short of the Cairns Airport. Vasey was killed in the crash along with all those on board. His body was recovered from the crash site and was buried with full military honours in Cairns cemetery along with those of Major-General Rupert Downes and Lieutenant-Colonel G. A. Bertram. Vasey's concern for his men outlived him. The men called him 'Bloody George', not after his casualties, but after his favourite adjective, and Vasey's personable style of command attracted immense loyalty from them. "Vasey owns the 7th," wrote a Melbourne journalist, "but every man in the division believes he owns Vasey."

Thus now it fell to General Steven to retain command of the 6th Division at that time already engaged in combat at Aitape-Wewak, the initial plan was to land Brigadier David Whitehead’s 26th Brigade at Tarakan on April 23 to establish an airstrip for supporting aircraft for subsequent operations, specifically an assault on Balikpapan by the remaining forces of Major-General George Wootten’s 9th Division on May 18. Following that, ten days later, a brigade was set to land at Bandjarmasin to secure air support for the planned invasion of Java by the entire corps on June 27. Ultimately, the operations at Bandjarmasin and Java were cancelled; the Tarakan landing was postponed to May 1; the Balikpapan invasion would instead be conducted by Major-General Edward Milford’s 7th Division on July 1; and the 9th Division was tasked with the invasion of Brunei Bay on June 10. Consequently, by the end of March, Morshead’s headquarters and the entire 9th Division had relocated to Morotai, where they would prepare and rehearse for the impending invasion.

In March 1944, General Doihara Kenji organized the 7th Area Army to establish a new defensive line across Malaya, Singapore, Sumatra, Java, and Borneo. Yes you heard that right, General Doihara Kenji. For those of you who listen to my Fall and Rise of China podcast, this guy is that infamous intelligence officer who worked on nearly all the significant false flag operations during the second sino-Japanese war. Working as an intelligence officer he played a key role in the orchestration of the Huanggutun Incident, Mukden Incident, kidnapping of Emperor Puyi and Marco Polo Bridge Incident, amongst countless other “incidents”. He was a bonafide mastermind behind numerous false flag operations and the Manchurian drug trade earning the moniker Lawrence of Manchuria. 

Now, anticipating an impending enemy invasion, Lieutenant-General Yamawaki Masataka reorganized the Borneo Defence Army into the 37th Army in September, placing it directly under General Terauchi's Southern Army. This force gradually received reinforcements from the 56th and 71st Independent Mixed Brigades, the 25th Independent Mixed Regiment, and several smaller units. Despite this, the command was understrength and poorly equipped, as most of the available equipment and experienced troops were reassigned to more critical locations in the Southwest Pacific. By the end of the year, under the leadership of Lieutenant-General Baba Masao, the 37th Army had stationed the majority of Major-General Nozaki Seiji's 56th Independent Mixed Brigade at Tawau, Major-General Yamamura Hyoe's understrength 71st Independent Mixed Brigade at Kuching, most of Colonel Iemura Shinichi's 25th Independent Mixed Regiment on Tawi-Tawi Island, Rear-Admiral Kamada Michiaki's 22nd Naval Special Base Force at Balikpapan, along with three battalions in Sandakan, two battalions and a naval unit in Tarakan, and one battalion each in Kudat, Beaufort, and Miri. However, in 1945, both Baba and Terauchi recognized that the enemy was likely to first target strategic locations on the east coast before establishing a strong presence in western Borneo to prepare for an invasion of Malaya. Consequently, they decided that the majority of the 37th Army should be concentrated around Brunei Bay, leading to orders for the 56th Independent Mixed Brigade to march overland toward northern Borneo.

The 370th Independent Battalion remained in Tawau, while the 369th Independent Battalion was sent to garrison Bandjarmasin. Additionally, half of the 454th Independent Battalion was dispatched to Balikpapan, and the other half to Bandjarmasin. This left only the 455th Independent Battalion and part of the 2nd Guard Unit at Tarakan. Early in April the strength of the Japanese force on Tarakan was estimated at about 4000 of whom 2500 were base troops. On the eve of the attack, however, largely because of information indicating that a battalion had been moved from Tarakan to Balikpapan, it was estimated that only 1500 to 2000 troops remained on the island. Aerial photographs showed five gun positions on the south-eastern tip of the island covering the channel along which ships normally entered Tarakan. Round Lingkas and Tarakan there seemed to be 15 anti-aircraft guns, and 9 medium and 5 light anti-aircraft guns seemed to be round the airfield. The whole of Lingkas beach was protected by parallel rows of posts, rails and pipes driven into the mud and extending into the sea to a distance of 125 yards from high-water mark; and between the beach and the road was an anti-tank ditch about 25 feet wide. A group of oil tanks was near the beach and, as it was possible that the Japanese might try to impede an attacker by flooding the oil over the sea and the swamp near the Pamusian River and setting it alight, the air force had taken pains to destroy these tanks. Field works could be seen; there were concrete pill-boxes built by the Dutch; and it was suspected that, here as elsewhere, tunnels had been dug into the hills. 

Units stationed at Sandakan were also ordered to move toward Brunei, leaving the 554th Independent Battalion behind. Furthermore, due to the challenges in supplying Tawi-Tawi, the 25th Independent Mixed Regiment was withdrawn to Borneo in February and instructed to march toward Jesselton, where it was expected to arrive in May. During this time, little was done to enhance the island's defenses, and the overland marches took a significant toll on the soldiers' stamina. Meanwhile, enemy air raids intensified, severely disrupting communications. Between April 11 and 29, Air Commodore Arthur Harry Cobby’s Australian 1st Tactical Air Force, along with Major-General Paul Wurtsmith’s 13th Air Force, conducted several air assaults on Tarakan and Tawau, targeting oil storage tanks, artillery positions, radar stations, defenses, and various buildings. On April 27, Rear-Admiral Forrest Royal’s Task Group 78.1 departed Morotai, carrying Whitehead’s 26th Brigade, protected by Admiral Berkey’s cruisers and destroyers. Over the next two days, this force executed a naval bombardment on shore targets while a minesweeping unit cleared and marked the approach route within 800 yards of the beach and Sadau Island. Early on April 30, the 2/4th Commando Squadron landed unopposed on Sadau, where they established an artillery battery to support the engineers in clearing obstacles from the invasion beaches.

After successfully completing the task with just a few sniper and mortar attacks, the main convoy reached the southwest coast of Tarakan Island an hour before sunrise on May 1. Following a heavy air and naval bombardment prior to landing, Whitehead’s assault waves began their approach to the shore, supported by rocket fire from the LCI gunboats. Around 08:00, the 2/23rd and 2/48th Battalions landed on Green Beach and Red Beach, respectively, without facing any opposition. However, once they moved inland, they encountered intense fire from Lingkas Hill and Roach. The 2/23rd Battalion launched an attack and captured both locations while the 2/48th took the Finch and Parks positions as they advanced to secure the Collins Highway ridge. Throughout the day, the remaining units of the 26th Brigade landed despite poor beach conditions and overcrowding, with the 2/24th Battalion held in reserve along Anzac Highway. By nightfall, the brigade managed to hold an area 2,800 yards wide at the base and up to 2,000 yards deep. Early on May 2, the 2/23rd seized Milko with minimal resistance, advancing further north to the Pages feature and Hospital Spur. Simultaneously, the 2/48th quickly secured Lyons and the junction with Burke Highway, while the 2/24th effectively attacked the Wills, Sturt, and Frank positions with support from aircraft and artillery. In the late afternoon, as one company moved up Anzac Highway toward the airfield, Lieutenant-Colonel George Warfe’s other companies converged on the Essex feature, which was captured without opposition during the night. The next morning, the 2/24th attacked the airfield from the south and east; although they successfully took the airfield ridge at a high cost, their late assault on the Rippon position to the north was repelled by determined enemy defenders.

At the same time, the 2/48th conducted reconnaissance towards the Peter and Sykes features, while the 2/23rd managed to secure the area between Gleneleg Highway and Pamusian. However, their assaults on Hospital Spur and Tarakan Hill were unsuccessful. Fortunately, Burke Ridge was found abandoned on May 4. By then, Whitehead had already instructed the 2/23rd to advance east and join the 2/24th in their attacks on the airfield, with the 2/3rd Pioneer Battalion and the 2/4th Commando Squadron taking over their positions in the west. The commandos then launched an attack on Tarakan Hill. Despite being initially held down by fierce enemy fire, they eventually forced the defenders off the high ground through sustained pressure, tank support, and a sweeping maneuver to the right. Simultaneously, the 2/48th advanced and successfully took control of the Evans feature, while a company from the 2/24th attacked the Peningkibaru stronghold after an intense artillery barrage, managing to secure the position just in time to fend off the Japanese who had retreated during the bombardment. Additionally, Warfe planned another assault on Rippon, but heavy Japanese shelling ultimately compelled him to call it off. On May 5, as the commandos and pioneers continued to diminish the remaining strongholds on Tarakan Hill, the 2/48th successfully cleared the road north to Otway, although they faced greater resistance near Sykes. Rippon was also discovered to be abandoned and was swiftly captured, though the Japanese still controlled the high ground to the north. Finally, on May 6, the 2/48th launched another attack on Sykes and successfully cleared the hill this time. While capturing the airfield and town accomplished Whitehead’s primary objective, the Japanese continued to hold the rugged interior of Tarakan, indicating that much fighting lay ahead until the garrison was completely defeated. By the evening of 6th May fairly copious information obtained from prisoners and Indonesians and from captured documents indicated that the enemy had about 390 naval troops in the Mount Api area, about 400 troops and civilians in the Fukukaku headquarters area, 200 from Sesanip along Snags Track to Otway, 300 on Otway and in District 6, 300 in the Amal River area and 60 at Cape Juata. Having lost the airfield and the water-purifying plant and hospitals "the enemy at this time was displaying a decided disinclination to hold ground. In particular he was shunning any ground which could be subjected to heavy bombing, shelling, or attack by tanks; or against which large-scale attacks could be launched by our troops".The enemy was now directing his operations to delaying the attackers, particularly with mines, booby-traps, suicide raids, and isolated parties fighting to the death in tunnels and dugouts. 

After the unsuccessful general attack on April 19, which yielded minimal gains, Generals Hodge and Buckner were preparing to push the offensive southward, fully aware that breaching the first Shuri defense ring would be a slow and costly endeavor. On the western front, the primary enemy positions on Kakazu Ridge had been entirely circumvented, with General Griner directing his troops to advance and focus on cleanup later. Consequently, on April 20, the majority of the 165th Regiment secured the coastal region before launching a southern attack that encountered immediate and fierce resistance in the rugged terrain north of Gusukuma, particularly around Item Pocket.  The center of the Japanese resistance lay in the I section of Target Area 7777, which came to be called "Item Pocket", in military terminology I is called Item. Actually, the pocket was the hub of the enemy position; from it, like spokes of a giant wheel, extended four low ridges, separated from each other by ravines and rice paddies. Potter's Ridge ran north from the hub, Charlie Ridge to the northeast, Gusukuma Ridge to the southeast, and Ryan Ridge to the southwest. Lying between Gusukuma and Charlie Ridges and sloping to the east was a cone-shaped hill called by Americans "Brewer's Hill." A gulch ran along each side of the hill Anderson's Gulch on the north and Dead Horse Gulch on the south. Both ran in an easterly direction, crossing Route 1 at small bridges just north of Gusukuma. The ground was superbly suited for active defense. Typical Japanese positions were connected by tunnels along the sides and under the crests of the ridges; Ryan Ridge, in particular, was honeycombed with such defenses. From Item Pocket the enemy had excellent command both of the coastal areas to the north and west and of the open land to the east where Route 1 ran north-south. The Japanese had long been aware of the defensive value of this position against either a beach landing on the northwest or an attack from the north. Months before the Americans landed, Japanese troops and Okinawan laborers were boring tunnels and establishing elaborate living quarters and aid stations. The area was held by two companies of the 21st Independent Infantry Battalion of the 64th Brigade, 62nd Division, supported by an antitank company, a machine gun company, and elements of antiaircraft, artillery, and mortar units. At least 600 Japanese occupied the Pocket, reinforced by several hundred Okinawans.

Only through persistent effort was the 1st Battalion able to reach a position east of Gusukuma by nightfall, while the 2nd Battalion successfully took control of Potter's Ridge and Fox Ridge but failed in its attempts against Ryan Ridge and Item Pocket itself. The leading platoon was well up on the slope of Ryan when Japanese on top opened up with mortars, machine guns, and artillery, cutting off the rest of Company E. While the company commander, his clothes torn by bullets, and the rest of the company straggled back to Fox Ridge, the leading platoon continued doggedly ahead. Its leader, T/Sgt. Earnest L. Schoeff, managed to reach the top with eight of his men despite almost constant fire. He was ordered by radio to hold until relief came. The men hugged the ground as darkness slowly descended. Then from three directions from fifty to sixty heavily armed Japanese set upon the Americans. In wild hand-to-hand fighting the nine men beat off the attack. Pfc. Paul R. Cook fired four cases of ammunition into the enemy, shooting down at least ten before he was killed. With grenades, rifle butts, and the enemy's own weapons, Schoeff and his men killed another dozen before the Japanese withdrew. With two of his men killed, another missing, and two wounded, Schoeff led the survivors back to his company during the night.

To the east, the 106th and 105th Regiments tried to advance south towards the village of Iso and the Pinnacles but were hindered by heavy enemy gunfire. In response, Colonel Winn dispatched his 2nd Battalion to maneuver around the East Pinnacle to reach the village of Natama, where Companies F and G were ultimately repelled by a strong Japanese counterattack. As they retreated in chaos, they faced an ambush from Japanese infiltrators, resulting in significant casualties. Despite these challenges, the 106th Regiment and Winn’s 3rd Battalion managed to bypass the West Pinnacle and advance with relative ease, halting 200 yards southwest of Iso. Additionally, Winn’s 1st Battalion fought its way to the western edge of Kakazu village and nearly cleared Kakazu Ridge to its eastern point before being ordered back to the escarpment to support the 2nd Battalion and halt any enemy breakthroughs.

At the same time, General Bradley ordered the 381st and 382nd Regiments to advance toward Nishibaru Ridge and the Tanabaru Escarpment. In response, Colonel Dill’s 3rd Battalion moved along Tombstone Ridge, clearing out the enemy from caves and tombs, and reached the southern end just in time to join Colonel Halloran’s 1st Battalion for a surprise offensive against Nishibaru. They quickly captured the crest but were ultimately driven back by the determined defenders. However, this partial victory prompted Halloran to deploy the 2nd Battalion in the afternoon for another assault to the south. By day's end, the 381st was entrenched along the northern slope of Nishibaru Ridge, though at a significant cost. Further west, Dill’s 2nd Battalion also pushed forward despite persistent fire from the Rocky Crags, where attempts by the 184th and 17th Regiments to attack were unsuccessful. They could not catch up with the 3rd Battalion. Meanwhile, General Arnold targeted Ouki Hill, but his initial assault was quickly halted by enemy mortar and machine-gun fire. Two armored flamethrowers successfully advanced 400 yards ahead of the infantry, neutralizing an enemy mortar position on Ouki Hill's west slope. Consequently, the Americans concentrated their mortars and smoke to cover the enemy positions, allowing a composite company to launch a surprise attack that secured the crest of Ouki Hill, although the isolated troops would soon have to fend off a series of fierce counterattacks.

The next morning, the 32nd Regiment launched an attack down Skyline Ridge with two companies. However, they were quickly halted by mortar fire at a deep road cut in the middle of the ridge. Despite this setback, the troops persevered, largely due to Sergeant Theodore MacDonnell’s efforts, and eventually gained control of the entire forward face of the ridge. When, east of the road cut, a man in the stalled third platoon, Company E, was killed, Sgt. Theodore R. MacDonnell, a gist Chemical Mortar Company observer, was impelled to drastic action. MacDonnell had frequently joined men on the line and shown qualities of a determined infantryman. Now, infuriated, he gathered up a handful of grenades and ran in the face of the machine-gun fire along the slope to a point underneath the spot where he believed the enemy gun to be located, and then started up the 20-foot embankment. When he looked over the crest he failed to spot the gun, but he did see three enemy soldiers and grenaded them. He made two trips to the bottom of the embankment for fresh supplies of grenades, but it was not until his third trip to the crest that he located the machine gun. MacDonnell then slid back to the bottom, grabbed a BAR, and mounted the embankment with it, only to have the weapon jam after the first shot. He skidded to the bottom, seized a carbine, and went back up for the fifth time. On reaching the crest he stood up and fired point-blank into the machine-gun position, killing the gunner and two covering riflemen. MacDonnell then hurled the machine gun down the slope behind him. A mortar that he found in the position was also sent crashing down the hillside. Sergeant MacDonnell was later awarded the Distinguished Service Cross for his heroism on this occasion. Lt. Fred Capp, commanding Company E, sent troops to reinforce MacDonnell immediately, and the position was consolidated. Then Company F, on orders given as a result of this sudden development, pressed the attack down Skyline Ridge, and by 18:00 the entire forward face of the ridge was occupied and only a knob at the lower tip was causing trouble. 

To the west, while Colonel Pachler’s Company B attempted another attack on Rocky Crags, Dill’s 3rd Battalion reorganized and encircled to reach Nishibaru Ridge via the 381st Regiment, launching an eastward assault that made good headway until they were met with fierce enemy counterattacks that forced them to halt. Simultaneously, Halloran coordinated an attack on Nishibaru, which was successfully repelled by the defenders. Colonel May’s 3rd Battalion was then deployed to fill the gap at the gorge. Overnight, a large number of Japanese troops had moved from the Urasoe-Mura Escarpment to set up mortars and machine guns in the Kakazu Pocket, prompting the 27th Reconnaissance Troop to advance toward Kakazu, where they became pinned down at the village's edge. As a result, Colonel Stebbins’ 3rd Battalion was ordered to position itself on Kakazu West. Looking west, the majority of the 105th and 106th Regiments were tasked with neutralizing the Pinnacles, but with little success. They did manage to clear the road to the escarpment's summit of mines and obstructions to facilitate tank movements. Finally, Colonel Kelley’s 2nd Battalion launched another unsuccessful attack across the mouth of Item Pocket, while Company F attempted to advance along the coast using amphibious tractors but was likewise repelled by intense fire from Ryan Ridge. The 1st Battalion also pushed southwest into Gusukuma, but without armor support, they made minimal progress against the machine guns in the village and fire from Item Pocket attacking from the right rear.

The enemy's defense was very effective on the east. Here the 1st Battalion had a major supply problem on its hands. Two blown bridges along Route 1 east of the Item Pocket were holding up vehicles of support units. During the previous night, fire from the Pocket had driven off an engineer platoon working at the site and killed the platoon leader. Early on the 21st Lieutenant Golden, the Bailey bridge expert, came up with ten truckloads of material. His engineers worked for an hour but had to stop in the face of almost ceaseless fire from the Pocket. Colonel Kelley then ordered scouts to find another stream crossing. A bulldozer cut a bypass around Anderson's Gulch near the railroad, but when, about 10:00, the operator nosed his machine out in the open, he was shot in the ear. General Griner, in Colonel Kelley's observation post at the time, ordered Lt. Col. Walter F. Anderson, commander of the 193rd Tank Battalion, to push the bypass through. Anderson himself climbed into his battalion's sole remaining "tank-dozer" and completed the bypass. A 47-mm. anti-tank gun, hitherto silent, scored a direct hit on Anderson's tank, killing him and a guide. The bypass was now blocked and had to be abandoned. This break-down in supply over Route 1 seriously affected operations east of Gusukuma. Colonel Mahoney's 1st Battalion attacked southwest early on the 21st into Gusukuma, but without tanks or cannon the troops made little ground against machine guns in the village and fire from Item Pocket on the right rear. Mahoney's left company did reach a point 400 yards north of the village of Yafusu, the farthest advance yet registered by 24th Corps since April 19, but here the troops were stopped by a network of enemy positions.

Concerned about the significant vertical separation between his battalions, Kelley decided to deploy his 3rd Battalion in an effort to fill the gap and simultaneously penetrate Item Pocket. Consequently, the American forces advanced through Dead Horse Gulch, with Company K fighting nearly to the center of the pocket. However, they were ultimately compelled to retreat due to heavy losses and intense counterattacks. On April 22, Kelley opted to hold and enhance his current positions while conducting extensive patrols. Looking to the east, as the 105th Regiment regrouped following a night counterattack from Kakazu, Stebbins' 1st Battalion systematically located and neutralized enemy positions behind them along the escarpment. Brigadier-General William Bradford also took command in the Kakazu area, bolstered by the 3rd Battalion, 17th Regiment, and most of the 2nd Battalion, 165th Regiment, successfully containing the pocket. Further west, the 383rd Regiment replaced the weakened 382nd, while the 2nd Battalion advanced down Nishibaru Ridge to capture the village and higher ground facing Hill 143 to the south. Meanwhile, the 3rd Battalion made minimal progress toward the Gate of the Tanabaru Escarpment. Additionally, Pachler's Company B initiated another attack on the west side of the Rocky Crags, supported by howitzers, tanks, and armored flamethrowers. However, once again, they faced hand grenades and knee mortar shells raining down from above, resulting in heavy casualties and the need to retreat. Finally, the 32nd Regiment maintained control of the forward face of Skyline Ridge but made no attempt to advance, while patrols scoured extensive sections of the southern slope to reach the abandoned eastern face of Hill 178. That night, artillery provided cover to the beleaguered defenders as Colonel Yoshida's 22nd Regiment took over along Skyline Ridge.

Following several days of inactivity, 41 kamikaze planes were once again launched on April 22. They successfully sank the minesweeper Swallow and one LCS, while also damaging two destroyers and another minesweeper, resulting in the loss of 25 aircraft. The next day, the 32nd Regiment remained stationed on the north slope of Skyline Ridge, except when conducting patrols or securing caves. This allowed the Japanese defenders to withdraw overnight from their remaining positions around Hill 178. With Company B worn out, the rest of the 1st Battalion, 17th Regiment joined the assault on the Rocky Crags, which fell with little resistance. To the west, medium tanks and armored flamethrowers finally launched a direct attack on Nishibaru Ridge and the Tanabaru Escarpment, successfully destroying most of the enemy positions, although few territorial gains were made. Further west, Winn’s 1st Battalion executed a surprise attack on the East Pinnacle, managing to capture the position after fierce hand-to-hand combat. At the same time, the remaining defenders at West Pinnacle initiated a desperate banzai charge towards Iso, where they were ultimately overwhelmed. Kelley then ordered Company I to conduct a probing assault on Ryan Ridge and Item Pocket, while Company C ascended Brewer's Hill but was unable to descend the steep side to join the fight. On April 24, no new attacks were launched due to a confusing mix-up of orders, but preparations were made for an assault the following day. After an artillery barrage, Bradford’s task force finally attacked the Kakazu Pocket with four battalions; however, they faced no enemy resistance, as the Japanese had abandoned their positions overnight. To the east, the beleaguered defenders in front of the 96th Division had also retreated, leading to the fall of the Tanabaru Escarpment, its village, Hill 143, and the rest of Nishibaru Ridge without opposition.

In a similar manner, the 17th Regiment ascended Hill 178 with only a few scattered artillery rounds landing nearby. The Japanese forces had resisted fiercely for five days, but with the first ring of Shuri defenses breached at multiple points, they chose to withdraw under the cover of heavy mist and light fog the night before. Even so, this advancement was minimal, and it was clear that reaching Shuri would take considerable time given the rate of progress over the first three and a half weeks of the operation. Nonetheless, Buckner believed that any significant landing on the Minatoga beaches or between Machinato airfield and Naha could not be logistically supported and would be vulnerable to strong enemy counterattacks. Therefore, he dismissed proposals to deploy the 77th Division or the 1st Marine Division for these efforts. Instead, it was decided to move the 3rd Marine Corps and the 77th Division from northern Okinawa and Iejima to replace the 24th Corps in the Shuri area.

I would like to take this time to remind you all that this podcast is only made possible through the efforts of Kings and Generals over at Youtube. Please go 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 after that, give my personal channel a look over at The Pacific War Channel at Youtube, it would mean a lot to me.

In April 1945, the Allies launched the invasion of Borneo, led by General Morshead. Swift assaults secured strategic areas against demoralized Japanese troops. Despite fierce resistance, American forces gained ground, crippling Japanese defenses. This victory marked a pivotal moment in the Pacific War, signaling the end of Japanese influence in the region.