The division skipped the Allied invasion of Sicily (Operation Husky) and instead trained intensively for the invasion of the Italian mainland, with the main landings being at Salerno (Operation Avalanche) on 9 September 1943, D-Day, to be undertaken by elements of the U.S. Fifth Army, commanded by Lieutenant General Mark Clark. The 151st Field Artillery Battalion went in on D-Day, 9 September, landing at Salerno, while the rest of the division followed on 25 September. Engaging the enemy at the Calore River, 28 September, the 34th, as part of the VI Corps under Major General John Lucas, relentlessly drove north to take Benevento, crossed the winding Volturno three times in October and November, assaulted Monte Patano, and took one of its four peaks before being relieved on 9 December.