Allied invasion of Italy Allied invasion of Italy The Allied invasion of Italy was the Allied amphibious landing on mainland Italy that took place on 3 September 1943 during the early stages of the Italian Campaign of World War II. The operation was undertaken by General Sir Harold Alexander's 15th Army Group (comprising General Mark W. Clark's Fifth Army and General Bernard Montgomery's British Eighth Army) and followed the successful invasion of Sicily. The main invasion force landed around Salerno on 9 September on the western coast in Operation Avalanche, while two supporting operations took place in Calabria (Operation Baytown) and Taranto (Operation Slapstick).
Allied Force Headquarters Allied Force Headquarters Allied Force Headquarters (AFHQ) was the headquarters that controlled all Allied operational forces in the Mediterranean Theatre of World War II from late 1942 until the end of the war in Europe in May 1945. AFHQ was established in the United Kingdom in August 1942 under Lieutenant General Dwight David Eisenhower in order to command the forces committed to Operation Torch, the Allied invasion of French North Africa, set for November. Eisenhower had the title Commander-in-Chief, Allied Expeditionary Force. Shortly after the establishment of the headquarters, "Expeditionary" was deleted from its title, for reasons of operational security.