World War II US Gunships: YB-40 Flying Fortress and XB-41 Liberator Bomber Escorts

Before the P-51 Mustang, the USAAF planned to use heavily-armed converted Flying Fortresses and Liberators to escort the Eighth Air Force's formations over Germany. This is the first history of their development, role, and failure, by an expert USAAF historian.

The XB-40 and XB-41 were secret, little-known experimental modifications of the B-17F and B-24D, respectively, into heavily-armed bomber gunships variously referred to as “convoy protector airplanes,” “bomber escorters,” or ”destroyer...