The Boeing B-17 'Flying Fortress' was an American heavy bomber used by the allies during World War 2.
- Germany: Approximately 40 examples were captured and refurbished, of which about a dozen were flown by the Germans.[N 1]
- Great Britain: The first operator to use - and lose - an example of the B-17 in combat. A batch of 20 B-17C aircraft were passed to the Royal Air Force as Fortress Mk Is during 1941.
- Japan: Three examples - B-17Ds 40-3061 and 40-3095, and B-17E 41-2471 - were repaired using parts from other wrecks and test flown. All three appear to have been scrapped by the end of the war.
- ↑ The rest were presumably used for spare parts and to provide ground instruction