The AGRA then took part in the Invasion of Italy, firing across the straight of Messina onto Italian soil. For this operation, both 5th and 6th AGRA fired side by side. Through the Italian Campaign, 6th AGRA fought at Sangro, Cassino, Arezzo, Florence, the assault on the Gothic Line. They held station on Monte Grande beside the British 1st Infantry Division over the winter of 1944/45, before beginning the Spring Offensive in the Po Valley.