The Army Air Forces Antisubmarine Command was formed in the fall of 1942 to establish a single command to control antisubmarine warfare (ASW) activities of the Army Air Forces (AAF). It was formed from the resources of I Bomber Command, which had been carrying out the antisubmarine mission in the Atlantic and Caribbean since the Attack on Pearl Harbor due to the lack of long range Naval aviation in that area.

The I Bomber Command was an intermediate command of the Army Air Forces during World War II. It trained bombardment units and aircrews for deployment to combat theaters. From shortly after the attack on Pearl Harbor until its assets were transferred to Army Air Forces Antisubmarine Command in October 1942, it conducted antisubmarine warfare off the Atlantic and Gulf coasts of the United States.