The 1st Anti-Aircraft Division saw extensive combat while trying to contest the Allied air raids on Japan. This included protecting Tokyo from attack, during which it was involved in the devastating raid against the city on the night of 9/10 March 1945. By the end of the war in August 1945, the division claimed to have shot down 193 Boeing B-29 Superfortress heavy bombers and damaged 454. These claims considerably over-stated the division's actual achievements, as like the other anti-aircraft divisions its performance was greatly limited by shortages of equipment.