- 121 - Pacific War - Bougainville Counteroffensive, March 12-19, 1944

Last time we spoke about Operation HA-GO, U-GO and some action brewing up on New Britain and Bougainville. Mutaguchi basically tricked his superiors at Tokyo into allowing him to attempt an invasion of India. Operations HA-GO and U-GO were simultaneously unleashed, the only problem was the allies were very ready to meet them. General Slim’s men captured documents indicating the true nature of the operations and he acted accordingly. The new box defense systems were employed as the allies lured the Japanese into major traps thwarting their designs against Imphal. The Japanese were fighting tenaciously, but time and supplies would not be on their side. Over on New Britain the allies advanced and managed to seize Talasea. Meanwhile on Bougainville the Japanese were preparing a large counteroffensive, attempting to breach the American defensive perimeter. The operation had just kicked off last episode and today we will continue the story. This episode is the Bougainville Counteroffensive  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.  The Marines departed Bougainville and were relieved by the Americal Division by the end of January 1944. Sporadic fighting emerged and through it Major General Griswold obtained intelligence indicating the Japanese would launch a major counter attack, most likely slated for early March. At the time Lt General Hyakutake was under extreme pressure to reduce the bombing against Rabaul. Rabaul as we know was smashed daily, suffering heavy losses. Admiral Koga had responded by taking away air units from Truk, but all this achieved was even more losses. Rabaul was neutralized, and Truk became vulnerable. The Americans had pummeled both so much, they were able to unleash a dramatic thrust into the central pacific aimed at the Gilberts, Marshalls and later the Carolines. Now it seems Hyakutake had been operating under some very bad intelligence, indicating to him the Americans were defending their perimeter with just a single division around the airfield. With the objective of destroying said airfield, Hyakutake did not know the actual number of defenders and would not enjoy movement by sea. The Americans had full control of the sea lanes, thus any IJN destroyers trying to move troops would run a risky gauntlet. By the first quarter of 1944, Rabaul had tossed meager attacks against the Americans, for example on January 23rd two bombers scored a direct hit over the living quarters of Brigadier General John Hodge and his senior staff officers.  What Hyakutake had to work with was 4300 men of the 45th regiment led by Colonel Isashi Magata. These men were considered the crack troops on Bougainville and they included artillery, mortar and engineering battalions. They were further supported by 4125 men of the 23rd regiment led by Major General Shun Iwara and 1350 men of the 13th regiment led by Colonel Toyo Horei Muda. All three units would be led by Major General Masatane Kanda. The 3 units made an arduous trek through the jungles to reach their jump off points by the evening of March 7th. Hyakutake then sent them a resounding message “time has come to manifest our knighthood with the pure brilliance of the sword. It is our duty to erase the mortification of our brothers at Guadalca