Largest operational bomber of WW2 is the B-29 Superfortress.
Bomber Aircrew in World War II was created in 2004.
Although the F-105 Thunderchief was the largest single engine jet fighter-bomber made, and was the USAFs only purpose built "fighter-bomber" (all others were fighters or interceptors) it was the smallest bomber used in the Vietnam War. The USN A6 Intruder and the USAF B57 Canberra were medium bombers used during the war, and the B52 Stratofortress was the heavy bomber of the Vietnam War.
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Answer Lancaster
Messerschmidt 264 bomber was fairly large but unsure if it was the largest. It was one of the longest range bombers. also do you count air ships?
Jimmy Stewart.
Vickers vimy
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My mother worked there and made torpedoes, She called it "Bell bomber".
No one knows. The first bomber and bombs dropped were hand grenades into the trenches during world war one. It is thought that this was done by a pilot and observer doing reconnaissance