On the morning of June 10, 1945, 100 B-29 Superfortress bombers attacked the Hitachi Aircraft plant in southern Chiba. This plant produced primarily training aircraft for the Imperial Japanese Navy, and aircraft engines, and was also involved in research and design work. The bombers arrived over target at 0745, bombing by radar through cloud cover.39th Bomb Group records The resultant bombing killed 324 civilians in central and southern Chiba, many of whom were children at the Chiba Prefectural Women's High School, which was totally destroyed by the attack.
