The 45th Division was under Omar Bradley's II Corps, which in turn was subordinate to Patton's Seventh Army. Overall command of the Sicilian invasion, called Operation Husky, was with British General Sir Harold Alexander, and the British forces were organized under the British Eighth Army commanded by General Bernard Montgomery. The 45th Division consisted of three infantry regiments, the 157th, 179th and 180th, and numerous other elements. Fighting alongside the 45th Division were the First Infantry Division, Third Infantry Division, and the 505th Parachute Infantry Regiment (PIR) (with the 3rd Battalion of the 504th PIR and numerous other support units attached), part of the 82nd Airborne Division.