Antiaircraft Command (United States) (AAC) was a command of the US Army during World War II in charge of anti-aircraft defenses across the continental U.S. Prior to the creation of the AAC, the US Army had established four defense commands for both antiaircraft and coastal defense: Northeastern (later Eastern), Southern, Central and Western. [1] Alaska was originally part of the Western Defense Command, but would be separated as the Alaska Defense Command in November 1943. The Eastern Defense Command would take over the Central Defense Command in January 1944 and the Southern Defense Command in March 1945.[ citation needed ]
In March 1942 the commands were reorganized and Anti-Aircraft artillery was separated from Coastal Defense Artillery - and the Antiaircraft Command (AAC) was born. Major General Joseph A. Green was placed in command. [2] Their first main job was to split the Anti-Aircraft Artillery (AAA) regiments into battalions so they could be easily moved to wherever the need was most severe. The AAC also divided into four regions which generally mapped to the army's defense commands. In October 1945, Green was replaced by Major General John L. Homer who would remain the commander of AAC until his retirement in October 1950. [3] [4]
| World War II Antiaircraft Commands | |||
|---|---|---|---|
 |  |  |  |
Eastern Antiaircraft Command | Central Antiaircraft Command | Southern Antiaircraft Command | Western Antiaircraft Command |
After the war the AAC was redesignated the Army Air Defense Command in 1950, and coastal artillery and AAA were again under one command.