| 1st Marine Amphibious Corps | |
|---|---|
 1st Marine Amphibious Corps insignia | |
| Active | 1 October 1942 to 15 April 1944 |
| Country | United States |
| Branch | USMC |
| Engagements | Invasion of Bougainville |
The I Marine Amphibious Corps, or I MAC, was a formation of the United States Marine Corps. It was created on 1 October 1942, with most of the staff transferred from Amphibious Corps, Pacific Fleet (ACPF). It was then deployed to the South Pacific Area – a U.S.-led multinational military command active during World War II that was a part of the U.S. Pacific Ocean Areas – first to Hawaii, then to New Caledonia.[1]
- ^ U.S. Marine Corps 1941–1945.Gordon L. Rottman; Michael Chappell (1995). London: Osprey Publishing. p. 21. ISBN 978-1-85532-497-8.