Bombing of Hachioji

The Bombing of Hachioji (八王子空襲, also known as 八王子大空襲 or the Great Hachioji Air Raid) was one of the last major air raids of World War II, occurring just two weeks before Japan's surrender. On the night of August 1–2, 1945, 169 B-29 Superfortress bombers launched a devastating incendiary attack on Hachioji, a city in western Tokyo Prefecture.

Hachioji was targeted primarily for its strategic importance as a railway hub. The city's station served as a junction for three major rail lines — the Chuo Main Line, the Yokohama Line, and the Hachiko Line — making it a critical node in eastern Japan's transportation network. The U.S. military identified Hachioji as a key logistics chokepoint whose destruction would severely disrupt the movement of troops and supplies. Additionally, the city housed munitions factory workers and had absorbed large numbers of evacuees from the Tokyo metropolitan area.

The bombers began their attack at approximately 00:45 on August 2, dropping a combination of M47 and M17 cluster incendiary munitions from low altitude. Over approximately two hours, 1,600 tons of incendiary bombs rained down on the city — the third-largest single-raid incendiary tonnage in the entire strategic bombing campaign against the Japanese home islands. The resulting firestorm consumed the predominantly wooden structures of the city center with devastating speed.

The destruction was catastrophic: 2.9 km² of the city's 3.6 km² urban area was reduced to ashes — approximately 80% of the city center. Official records document 445 deaths and over 2,000 injuries, with some 70,000 residents left homeless. The same night, B-29s also struck the cities of Nagaoka in Niigata Prefecture and Toyama in Toyama Prefecture in coordinated raids.

Today, a peace memorial stands in Fujimori Park (富士森公園), erected in 1965, in which 265 victims of the raid are enshrined. The city of Hachioji holds annual memorial ceremonies to honor those who perished in the raid. The rebuilt city center around Hachioji Station bears little trace of the wartime devastation, though the memory of the air raid remains a defining event in the city's modern history.