Toyama Air Raid Site

The Toyama Air Raid (富山大空襲) of August 1-2, 1945 was one of the most devastating conventional bombing attacks of the Pacific War. In terms of the percentage of the urban area destroyed, Toyama holds the grim distinction of suffering the highest destruction rate of any Japanese city subjected to strategic firebombing — 99.5% of the built-up area designated as the target zone was incinerated in a single night (the figure refers to the American target area rather than the whole city).

On the evening of August 1, 1945, a force of 182 B-29 Superfortress bombers from the 313th and 314th Bombardment Wings took off from bases in the Mariana Islands, targeting Toyama as part of a coordinated four-city attack that also struck Hachioji, Mito, and Nagaoka. The date was chosen deliberately: it was the 38th anniversary of the U.S. Army Air Corps, and commanders ordered maximum force for a "celebration bombing." Of the 182 aircraft dispatched, 174 reached Toyama.

At 00:36 on August 2, pathfinder aircraft dropped illumination flares over the southeast corner of Toyama Castle ruins, marking the aiming point. Over the next 111 minutes, the bomber stream released 12,740 incendiary devices totaling approximately 1,465 tons — including 4,500 E46 cluster incendiary bombs, 7,800 M-47 napalm bombs, and 300 M-19 cluster napalm bombs. The city, built predominantly of wood and paper, ignited rapidly. Wind-driven firestorms engulfed block after block, creating temperatures so extreme that fires were visible and triggered automatic cameras aboard B-29s flying at over 12,000 feet.

The human toll was catastrophic: 2,737 civilians were killed according to the most commonly cited count (Japanese tallies range from about 2,150 to about 2,700), approximately 7,900 were injured, 24,914 houses were destroyed, and 109,592 residents — virtually the entire urban population — were rendered homeless. Of the 4.87 km² target area, 4.84 km² was completely burned. Thousands of desperate civilians fled toward the Jinzu and Matsukawa rivers, where many drowned or were killed by continuing incendiary strikes.

Toyama was targeted because of its strategic industrial importance. The city housed the Fujikoshi steel works (不二越鋼材), Nihon Carbide Industries, and several aluminum processing plants critical to Japan's aircraft production. It had also been used as a practice target for "pumpkin bombs" — dummy atomic bomb casings dropped as rehearsals for the Hiroshima and Nagasaki missions just days later.

Today, the rebuilt city center contains several memorial sites including the Bombing Center Monument "Yume no Seichi" in Toyama Castle Park, the Tennyo Statue along the Matsukawa River, and the war-damaged Funabashi stone lantern. Annual memorial ceremonies are held each August 1, and the Toyama Air Raid remains one of the most significant examples of strategic bombing's devastating impact on civilian populations.