In April 1943, after several months of tough training, its troopers deployed to the Mediterranean Theater of Operations, under the command of Major General Ridgway to take part in the campaign to invade Sicily. The division's first two combat operations were parachute assaults into Sicily on 9July and Salerno on 13 September 1943. The initial assault on Sicily, by the 505th Parachute Regimental Combat Team, under Colonel Gavin, was the first regimental-sized combat parachute assault conducted by the United States Army. The first glider assault did not occur until Operation Neptune as part of the D-Day landings of 6 June 1944. Glider troopers of the 319th and 320th Glider Field Artillery Battalions and the 325th Glider Infantry Regiment (and the 3rd Battalion of the 504th PIR) instead arrived in Italy by landing craft at Maiori (319th) and Salerno (320th, 325th).