The first aircraft to be purposely designed as a radar-equipped nightfighter, Northrop's P-61 Black Widow was heavily influenced by early RAF combat experience

The first aircraft to be purposely designed as a radar-equipped nightfighter, Northrop's P-61 Black Widow was heavily influenced by early RAF combat experience

World War II changed the face of warfare forever. Now enemies were fighting and flying all night, which mandated that a fighter be developed that could carry a

This collection of squadron histories has been prepared by the USAF Historical Division to complement the Division's book, Air Force Combat Units of World War I