The Mediterranean Air Command (MAC) was a World War II Allied air-force command that was active in the North African and Mediterranean Theater of Operations (MTO) between February 18 and December 10, 1943 . MAC was under the command of Air Chief Marshal Sir Arthur Tedder, whose headquarters were next to those of the Supreme Allied Commander, General Dwight D. Eisenhower, in Algiers, Algeria, during the planning of the Allied campaigns in Tunisia, Pantelleria, Sicily, and the invasion of mainland Italy during the war.