- 68 - Pacific War - Battle of the Blackett Strait, March 7-14, 1943

Last time we spoke about the battle of the Bismarck Sea. Though it was called a battle, what occurred at the Bismarck Sea was more of a catastrophic slaughter and a showcase of how the Japanese were no longer capable of performing offensives. The allies performed skip bombing and mast head bombing techniques against a convoy heading for Lae to deadly effect. 4 destroyers, 8 transports, 20 fighters were destroyed and nearly 3000 Japanese were killed. The allied pilots were ordered to give no mercy to the enemy and many reluctantly attacked the survivors of the shipwreck carnage. Their commanders justified the actions stating the men would have been landed and put right onto the front lines in New Guinea causing even more suffering. Yet as magnificent a victory as it was for the allies, it certainly was not the only one at this time for another major naval battle was occurring in the solomons

This episode is the Battle of Blackett Strait 

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. 

 

Yet before we can jump back into the turbulent seas of the south Pacific we will talk a bit more about the theater of the Pacific War that goes far, often too forgotten, that of China. 

Its been quite sometime since we were last in China. Now stating the Second sino-Japanese war is complicated is an overstatement. To simplify it somewhat know this, there were 22 major engagements between the NRA and IJA during the war. One of these engagements is known as the Battle of West Hubei, which was one of four major battles that took place in Hubei. Now in July of 1938 the IJA Dai-Jyu-ichi gun “11th army” was formed under the Japanese central China area army. The purpose of such a formation was to conquer and occupy central provinces in China, specifically those between the Yangtze River and the Yellow River. The 11th army had played a crucial role during the battle of Wuhan and had seen quite a list of differing commanders. In December of 1942 Lt General Isamu Yokoyama took control of the 11th army and he set his sights on various targets. But before he could unleash his forces, Yokoyama was dealing with major sabotage operations against his main base. And these sabotage operations were not being performed by the NRA, no they were being performed by the CCP’s New Fourth Army.

Now the CCP had limited actions against the Japanese during the Second Sino-Japanese war. Although the press, such as the New York times had parroted some CCP propaganda insisting Mao and his forces were tying down 80 percent of Japanese forces in China, this is not at all true. The CCP did not have the means to do this, nor did they even want to. Mao Zedong himself was not an all-powerful leader at the offset of the Pacific War. The USSR favored his colleague, Wang Ming who was known as one of the 28 Bolsheviks, ie: moscow educated leaders. Mao referred to these people as “ the dogmatist faction”. Mao also had to deal with empiricist faction members such as the former party leader Zhou Enlai and other CCP military commanders such as Peng Dehuai and Chen Yi. In February of 1942 the CCP began the “rectification Movement” known as (Zhengfeng) and on February 1st Mao Zedong have a speech in Yanan calling for a study of the CCP’s history and suggesting “the party not only needs democracy but needs centralization even more”. The roots of Zhengfeng indicate a Confucian philosophy emphasized the importance of ethical education “The cultivation of the person depends on rectifying the mind,” Confucius had instructed his followers”. Mao organized the Rectification Meetings expecting CCP members to indulge in self-criticism and confession. As you can imagine there were nefarious reasons for this. Mao alongside his close allie Kang SHen, the CCP’s ruthless head of intelligence took charge of the Central General Study committee and began to get false confessions using psychological torture. Kang’s methodology would define Mao’s growing grip over the CCP and the future of it. Residents of Yanan would recount “the valleys and cave outside the town held victims of psychological bullying who produced screams and howls like wolves every night. Suicides occured often, one victim who survived swallowing glass was immediately forced to write self-criticism”. By 1943 the Rectification campaign had become a system of mass arrest, torture and execution. In essence it was a purge that carried on well into 1944 using false confessions from prisoners who were trying to save their own lives. It is estimated 10,000 CCP members, many of which were former inhabitants of KMT held areas were executed. Wang Ming, Mao’s primary target at the time was spared, but he alongside the 28 Bolsheviks were forever sidelined, but hell better then being dead I guess? Meanwhile Zhou Enlai and the empiricists swung firmly behind Mao fearing for their lives.

The Rectification movement was to be one of many themes played out by Mao Zedong. There was a cycle throughout his reign where intellectuals were invited to be open, then the party turned against them, they were destroyed by self-criticism, paraded as criminals, tortured until they revealed traitors real or not and executed. As Mao put it in August of 1943 “It is not good to correct too early or too late, Too early … the campaign cannot unfold properly; and too late … the damage [to torture victims] will be too profound.” One of the 28 Bolsheviks, Wang Shiwei who worked as a journalist for Liberation Daily wrote an article titled “Wild Lilies” in 1942, which criticized Mao Zedong for womanizing and enjoying too many luxuries. He spoke about how Mao took an ambulance sent as a gift by the Chinese New York Laundry workers to the CCP to carry wounded troops and instead used it as a private transport for himself as his 23 year old mistress, actress Jiang Qing. Mao would later marry her after leaving his third wife He Zizhen who he had 5 children with. Well Wang Shiwei was expelled from the CCP on Mao’s orders in October 1942 having been found guilty of treason and would be executed in 1947 on Mao’s orders. Anyways, enough sidelining about Mao, closer to the story at hand Mao had unleashed a propaganda campaign promoting the false image of the CCP’s war effort against the Japanese. The KMT actually captured documents with orders from Mao which explained his thoughts on the war “The Sino-Japanese War affords our party an excellent opportunity for expansion. Our fixed policy should be 70 percent expansion, 20 percent dealing with the Kuomintang and 10 percent resisting Japan.” Between 1937-1940 the CCP grew its 8th army from 45,000 to 400,000. Meanwhile the 4th army increased from 15,000 to 100,000. The CCP’s lionshare of war effort was aimed at the KMT but they did perform considerable actions against Japan. The Fourth Army was led by Commander Chen Yi and he had an irregular force known as the 15th brigade of the 5th division led by Commander Li Xiannian. Their arms and ammunition were self manufactured and though they had enough of them, the quality suffered heavily. Their main base was in Northern Jiangsu, but they also operated in central Jiangsu, northern and southern ANhui, northern Jiangxi and Zhejiang provinces. They were all over the place specifically to thwart any efforts of the NRA from encircling and destroying them. They also clashed with the NRA much more than they did with the Japanese. Despite that, the 5th division of Li Xiannians forces had fought tenaciously during the 1942 battle of the Dwarf Mountain. The CCP forces defeated the forces of Wang Jinwei and captured Mienyang in the process. This success however drew the 11th army in who carried out attacks from the north to drive the CCP out, but the CCP troops dug in and would not budge.

Yokoyama sought to surprise the CCP menace by attacking their positions rear from Yueyang and Jingzhou. The idea was to grab the CCP’s attention while his 58th division launched an attack against Mienyang. In early february the 40th and 13th divisions began to raise their activity at Yeuyang and Jingzhou to deceive the CCP into believing a major offensive was about to be made against Changsha, which had been the crux of the IJA for a long time. On February 15th the 40th crossed the Yangtze river and began to attack Zhuhezhen, Jianli County and Hubei. Meanwhile the 13th division advanced east sneaking over the Yangtze river from Shashi and marched through a gap between the CCP positions in Jiangnan. The Chinese defenders were taken by complete surprise and it would be the 87th army garrison who would be first hit. The defenders were taking heavy losses and had to pull back to Mienyang. Soon the 40th and 13th divisions were closing in on Fengkow and Fuchang as the CCP resisted their advances killing 354 and wounded 890 Japanese. The final phase of the operation saw the 58th division begin a march south upon Mienyang, enjoying aerial support in the form of the 44th air regiment.

The CCP’s fortified positions were obliterating and the defenders were forced to disperse and escape before encirclements could be made. Many would manage to avoid capture by disguising themselves as civilians, but this only prompted Yokoyama to enact intense search and pursuit actions lasting into late march. The CCP leader Wang Haishan along with countless CCP troops were captured by these means. What was the battle of west hubei resulted in a mixed victory for either side. Many in the allied camp reported the Chinese had achieved a major strategic victory. However they paid a heavier price than the Japanese, it is estimated the CHinese had nearly 24,000 dead and 18,000 wounded while the Japanese had 25,000 casualties. Alongside this Historian Barbara Tuchmen states “the Japanese withdrew without pursuit from what appeared to have been a training and foraging offensive to collect rice and river shipping”. Thus it perhaps should be better called a tactical draw between the two forces.

 

Japan had just lost 4 destroyers, 8 transports and the lives of 3000 or so men. These figures did not even count the numerous sailors and irreplaceable pilots lost. The battle of the Bismarck Sea was strategically a defeat for Japan, second only to that of Coral Sea and it confirmed their inability to control the air in the region and ensured the continued isolation of their forces in New Guinea. In many ways New Guinea was facing the same fate that had befallen Guadalcanal. The Japanese logistics simply could not stretch that far and the allies were strangling their enemy the same way siege warfare had been done since ancient times. Japanese commanders would never again send transports or capital ships into the waters off Papua. From this point on the garrisons on New Guinea would only receive meager supplies brought via submarine or barges, completely inadequate to the task. Thousands of Japanese troops manning the defenses at Lae and Salamaua would basically be left on their own to face a growing allied advance. General Douglas MacArthur went on the recond to say “the battle of the Bismarck Sea was a decisive aerial engagement of the war and marked the end of the Japanese offensive in the Southwest Pacific”. For those Japanese survivors who did manage to land on friendly territory after the slaughter, they were finished as combatants. Lieutenant Masamichi Kitamoto observed survivors coming ashore at Tuluvu on the west of New Britain and had this to say “Their eyes were glassy and deeply sunk into their faces. All were jittery … as if they were seeing a horrible dream … a pitiful scene of a vanquished and defeated army.”

Despite the amazing victory, MacArthur's forces could not capitalize on the success and perform a major offensive against Lae. The major reason for this was MacArthur lacked amphibious forces to support the overland march through New Guinea. Since mid 1943 MacArthur’s forces had been advancing up the northern coast of New Guinea while a amphibious force was in the making. Rear Admiral Daniel Barbey took command of what would become the 7th amphibious force on january 10th of 1943. Barbey had immediately hit it off with MacArthur in a similar fashion to how General Kenney had hit it off with MacArthur. However Barbey had pretty much nothing to work with. There were no amphibious training facilities, therefore one of his first actions was to establish some at Toobul Bay near the mouth of the Brisbane river and point Stephens. Meanwhile MacArthur requested small craft and transports, as aside from his command everyone else was receiving such equipment en masse, obviously because Europe and the central pacific had been priorities. As Australian and American troops began to arrive to MacArthurs command he began to demand they train to debark from larger ships down cargo nets onto smaller craft. But Barbey did not have any attack transports (APA), which were key for these types of operations. The first Landing ship tanks (LST)s and Landing craft Tanks (LCT)s would not arrive until mid January. Until he received these he began training up the Landing craft infantry (LCI) by tossing nets over cliffs to replicate the debarkation from large ships. By march 15th of 1943 Admiral King signed off that the Southwest Pacific force was to be the 7th fleet, under the command of Admiral Arthur Carpender. This did not go over well with MacArthur who believed quote “much like his predecessor, Vice Admiral Leary, Carpenter seemed to be working more for the Navy rather than MacArthur”. All was not well in the court of camelot.

PT Boats of the MacArthur fleet would once in awhile engage an enemy submarine, but they usually got away with ease. Bad weather, large coral reefs made it sort of a nightmare for the smaller ships and PT boats were very fragile, striking just a log could knock them out. But they were enough to scare the Japanese from using too many barges and thus were sort of a fleet in being. The PT boats would have something of a surface monopoly in the Solomon sea for 6 months, constantly looking for action and finding none. Admiral Carpender encouraged their use in his command as they had shown their effectiveness during the battle of the Bismarck Sea. 

Now back over in Rabaul, Vice Admiral Jinichi Kusaka remained in command of naval forces at Rabaul and had the responsibility for the defense of the central solomons. He knew he could not expect much help from the combined fleet and definitely nothing from the Army so he set about strengthening the air defenses at Rabaul and rapidly tried to develop airfields at Munda and Vila-Stanmore. Alongside this he performed a survey of Santa Isabel island incase it could also provide an additional strip. With over 200 fighters and bombers under his thumb he hoped to hold the Central Solomons with air power alone, but he would be horribly overwhelmed. Against his command, Admiral Fitch had some 316 aircraft of various types on Guadalcanal and the Cactus air force could easily be reinforced from a pool of 200 more aircraft from Espiritu Santo and New Caledonia. And here we have another decisive advantage coming to the allies, that in technology. New aircraft were coming to the Pacific such as the Grumman F6F Hellcat and the Vought F4U Corsair which were significantly more advanced than the Zero fighter in terms of speed, armament, ceiling and rate of climb, the key parameters for a good fighter. The Hellcat was the next generation for carrier fighters and the Corsair was a gull-winged fighter bomber issued to marine fighters on Guadalcanal. Just for you tech geeks, the Hellcat was a very large aircraft for its type, weighing 1200 pounds unloaded, powered by a 2000 horsepower Pratt & Whitney engine that could climb 3500ft per minute. It held a flying range of 1000 miles, had a cockpit slickly faired into the fuselage and heavily armored. It carried 6 electrically charged .50 caliber guns and twice the ammunition to its predecessor the Wildcat. While the Wildcat lagged behind the Zero, the Hellcat outdid her in speed and dive. As Bill Davis said upon first encountering a Hellcat “the plan was a monster. From the moment I started the engine I was thrilled and amazed, there was a thunderous backfire as flames shot out of the exhaust pipe. A sailor with a fire extinguisher moved toward the plane, but the engine quickly caught and the flames disappeared as the engine started to purr with a mighty roar. I could feel the power through the throttle as well as my ears and every quaking fiber of my body”. In contrast, the Japanese continued to employ the same types of aircraft knowing full well their weaknesses and knowing full well the Americans were developing new models to counter them. The only advantage the Japanese still enjoyed was their airstrips laid out all over the South Pacific, with Munda base being a particularly important one to allow bombers from Rabaul or Bougainville to stop and refuel for striking missions. 

Munda’s airfield was attacked countless times by naval and aerial bombardment which filled her up with holes, but just as fast as they were maid her Japanese construction crews filled the craters with crushed coral and in a matter of minutes or hours the strip was made operational again. As Admiral Ainsworth said “The fact is inescapable that the Japs have gone right ahead and built two airfields in spite of constant bombing by aircraft and two bombardments by surface vessels. We may destroy large quantities of gasoline and stores, and we may render these fields unusable at critical times, but the only real answer is to take the fields away from them.” Regardless of the lack of success neutralizing the airstrip for good, Admiral Halsey had his eye on Munda from the offset of finding out the Japanese had begun constructing an airfield upon it. Halsey saw it as a very valuable new site offering terrain suitable for a large bomber field. In order to invade it simply needed to be pounded to dust and if Aerial bombarding was not enough to do the job he was willing to navally bombard it to hell if he must.

The Japanese had become emboldened by the increasing failures of the allies to hit their airfields at Munda and Vila-Stanmore and allowed cargo and troopships to make runs between them and Rabaul more frequently. Thus far only piecemeal attacks had been made against either outpost, but Hasley was planning to send a larger force with considerably larger firepower.

On february 27th, Halsey appointed Rear Admiral Aaron Merrill’s Task Force 68 to smash Munda and Vila-Stanmore. Task force 68 consisted of 3 light cruisers: Montpelier, Cleveland and Denver and 7 destroyers: Waller, Cony, Conway, Fletcher, Radford, Nicholas and O’Bannon. Merrill divided his force into two groups, the first group of 4 destroyers led by Captain Robert Briscoe would hit Munda, while the rest led by Merrill himself would hit Vila-Stanmore. On March 4th Merrill departed Espíritu Santo heading for the new allied base at the Russell islands. Merrill intended to use the same tactics employed during the last two bombardment attempts back in January. Navigation was to be by SG Radar, gunfire to be continuous after the first ranging salvos were fired and he would use all ships in a column formation to fire simultaneously to limit the time period of time they had to stay in the enemy waters. By the afternoon of March 5th, Merrills force left the Russells en route to their departure point just 7 miles north of Daisen island. During the night the 4 destroyers detached to go hit Munda while Merrills group continued en course towards the Kula Gulf, believing they would manage to do so undetected. However that night the IJN destroyers Murasame and Minegumo were bringing supplies from their base at Vila to Kolombangara. These 2 ships were part of the 2nd fleets Destroyer squadron 4 under the command of Captain Masao Tachibana. They had taken their route through the Vella Gulf and Blackett Strait and were going to return to the Shortland Islands via the shorter route through the Kula Gulf. The Japanese destroyers were discovered by American aerial reconnaissance prompting Admiral Merrill to engage.

The Americans estimated the Japanese destroyers were going to reach Blackett strait at about 11:30, while Merrill’s schedule called for him to make a course change to enter Kula Gulf by 12:17. The distance from the mouth of Kula Gulf to the eastern entrance of Blackett strait was around 20 miles thus it seemed to Merrill to be senseless to change his plans and increase their speed, he did not think they could catch them in time. Thus he opted to simply carry out his original bombardment plan before the Munda group did their which would raise the alarm for the nearby Japanese vessels in the strait. But After Captain Tachibana delivered his supplies he had chosen to take the shorter route back through the Kula Gulf which would fatefully shove him into Merrills position.

Just after midnight, Merrills 3 light cruisers were swinging into Kula Gulf while his destroyers detached to perform an advance sweep of the Gulf. Meanwhile the two Japanese destroyers were coming in from the opposite direction along the east coast of Kolombangara when at 12:53, the radar aboard Montpelier detached them northeast of Sasamboki Island. The ships all began to converge on the contact as they tracked the enemy, training their guns on the enemy. Now Radar controlled gunnery was still new to the US Navy and thus the first barrage tended to target the nearest and same target. This was actually a tactical deficiency that had given the IJN an advantage on multiple occasions. At a minute after 1am, the Montpelier broke the silence of the night and opened fire with her main batteries, followed by the Cleveland and Denver. The cruisers 6 inch guns were firing at a round of 11,000 yards battering her. Their fire was concentrated upon the Murasame and their radar controlled gunnery successfully straddled the destroyer. In just 5 minutes a salvo hit caused a large explosion on the Murasame with large fires erupting across her deck. 

While this was going on the Waller launched a volley of 5 torpedoes and scored a hit on the Murasame causing a tremendous explosion breaking her in two as she quickly sank. Apparently the explosion from the torpedo hit was heard by Briscoes force around 25 miles away over at Munda. Merrill then directed fire upon the Minegumo as it tried to keep a northerly course while returning fire. After charging north for 4 miles under intense fire the Minegumo came to a stop suffering from heavy damage. The American destroyers tried to get into position to fire torpedoes, but by the time they did the Minegumo was sinking. Merrills cruisers likewise had begun firing starshells over the Blackett Strait and the illumination indicating there were no more enemy vessels.

Merrill force began their bombardment of Vila-Stanmore at 1:25 targeting supply dumps, runways, bivouacs and the various aircraft they could see on the ground. Using aid from their aerial reconnaissance they were able to score many hits on emplacements such as shelter tents, barracks, ammunition dumps, grounded planes and such. It was very successful causing a lot of damage and they knocked out the shore batteries that tried to respond. By 1:40 Merrill ordered a withdrawal through the North Georgia Sound. 174 IJN personnel had been killed, of which 128 were aboard the Murasame. There was two submarines the USS Grayback and Grampus that had been assigned to support Merrills force and the Grampus would never return from her voyage. It is possible during the battle one of the IJN destroyers sunk her, but her wreckage has never been found.

At the same time the battle was occurring, Captain Robert Briscoe’s group proceeded unmolested to to their bombardment point. At 1:04 they group began to hear and saw the firing flashes from the battle and alongside this unidentified aircraft were coming over Rendova island prompting their caution. Nonetheless by 1:39 they began their bombardment striking the center of the landing strip. By 1:50 the bombardment ceased and they made their withdrawal. Although the airstrips were repaired quite easily, the loss of 2 destroyers in a fast fashion was a bad omen for the Japanese.

During March of 1943 allied bombers would make sporadic attacks on the Japanese airfields over Ballalae, Kahili, Shortland Island and Munda. Alongside this allied photo reconnaissance got a good picture of Japanese movements between all their bases and this soon revealed a new Seaplane base being built off southern Bougainville prompted a dawn fighter attack on the 28th. Led by Captain Lanphier of the 70th fighter squadron, 6 P-38’s destroyed 8 Japanese seaplanes. Every month brought the Japanese more losses, whether it be shipping, men or materials they simply could not afford, while the American production capabilities were only growing bigger.

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The Japanese had a mixed success in central China and a rather small, but terribly loss in the Solomons. They simply could not afford any more losses, for each one was drawing them ever closer to losing the war.