Eleventh Air Force
Established on 28 December 1941 as the Alaskan Air Force at Elmendorf Field, Alaska Territory. 11 AF was a United States Army Air Forces combat air force in the American Theater of World War II, providing air defense of Alaska and engaging in combat operations primarily in the Aleutian Islands and Northern Pacific during the Aleutian Islands Campaign.
19th Air Division
Later in August 1943, it was decided to reassign Ninth Air Force to England to be the tactical air force in the planned invasion of France scheduled for May 1944. The IX Bomber Command reassigned its groups to Twelfth Air Force, and eventually its heavy bombardment groups became the core of the newly activated Fifteenth Air Force, while its B-25 Mitchell medium bomber groups remained with Twelfth Air Force.