- 193 - Pacific War Podcast - The Siege of Japan - July 29 - August 5, 1945

Last time we spoke about Operation Downfall. The Allies, under General Krueger, initiated a decisive campaign to clear the Japanese from Luzon. As they faced the entrenched Shobu Group, challenges included treacherous terrain and a resilient enemy. Simultaneously, Japan braced for an invasion, mobilizing reinforcements and devising defensive strategies to ward off the impending Allied assault. As July approached, General Yamashita’s forces prepared to execute a final breakout, but progress was hampered by relentless guerrilla attacks and adverse weather conditions. With Operation Downfall looming, Allied troops focused on strategic landings in Kyushu and Honshu, driven by a relentless determination to defeat the Japanese militarily. The intense battles of Luzon became a precursor to this monumental operation, marking a turning point in the Pacific War. 

This episode is The Siege of Japan

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. 

Boy I have been waiting a long time to come to this point. One of the most significant events in human history that deeply affects us to this very day. Nuclear war is as much a threat today as it was during the cold war. The dropping of the Atomic bombs on Hiroshima and Nagasaki were deeply complicated events fraught with issues of morality. It goes without saying whether or not the bombs needed to be dropped, their actual impact on the surrender of Japan and so forth are still issues hotly debated to this very day. I have spoken on the issue countless times on my personal channel and podcast, but I figure to do this subject justice I will create a full episode for it. Thus in this episode we are going to just cover what happened, but rest assured I will come back to this later on.

As we last explored, following the successful invasion of Luzon in the Philippines, along with the fall of Iwo Jima and Okinawa, American forces began preparing for the final invasion of the Japanese Home Islands. This operation was codenamed Operation Downfall. One key initiative leading up to this invasion was a comprehensive air-sea blockade and bombardment campaign against Japan itself. Previously, we detailed the extensive firebombing and precision bombing efforts executed by General LeMay’s 21st Bomber Command. However, during this crucial period, the B-29 Superfortress bombers undertook a distinct operation under the codename Starvation. This single operation would be one of the largest factors that contributed to the surrender of Japan and its one most people have never heard of.

In July 1944, Admiral Chester W. Nimitz proposed a bold plan to use B-29 Superfortress bombers to mine the waterways surrounding the Japanese Home Islands. Although Generals Henry H. Arnold and Walter Hansell expressed concerns that this mining campaign could distract from the B-29's primary role as a strategic bombardment aircraft, they eventually agreed to assign one bomber group to focus on aerial mining when conditions permitted. On December 22, Hansell's 21st Bomber Command was directed to formulate a naval mining program aimed at executing between 150 to 200 sorties each month, which was set to begin in April 1945. However, by this time, General Curtis LeMay had taken command of the 21st Bomber Command. LeMay was notably enthusiastic about the idea and successfully recommended to Washington an upgraded mining program that aimed to deploy up to 1,500 mines each month using a full B-29 wing. LeMay viewed aerial mining in a different light than Arnold or Hansell, seeing it as a vital extension of strategic bombing. He recognized that most of Japan's war production materials, as well as a significant portion of its food supplies, were imported from regions such as China, Southeast Asia, and the Dutch East Indies. Japan's industrial heartland is primarily found on Honshu, its largest and most industrialized island, while Shikoku, another island, also lacks essential resources such as iron ore and high-quality coal. These crucial materials were sourced from Kyushu and Hokkaido, both of which are other Japanese islands. All these resources were transported by sea, so without easy access to raw materials, Japan’s industrial output would come to a grinding halt. T