 LeMay ordered all defensive guns but the tail gun removed from the B-29s so that the aircraft would be lighter and use less fuel.On the night of 9–10 March 1945, 334 B-29s took off to raid with 279 of them dropping 1,665 tons of bombs on Tokyo.The bombs were mostly the E-46 cluster bomb which released 38 napalm-carrying M-69 incendiary bomblets at an altitude of .