Cactus Air Force refers to the ensemble of Allied air power assigned to the island of Guadalcanal August 1942 until December 1942 during the early stages of the Guadalcanal Campaign, particularly those operating from Henderson Field. The term "Cactus" comes from the Allied code name for the island. In 1943, the Cactus Air Force was absorbed into AirSols, a joint command of Allied air units in the Solomon Islands.