 It was authorised to use the "Royal Devon Yeomanry" designation from 17 February 1942.142nd Field Regiment fought in Sicily from July 1943 and in Italy thereafter under command of 8th Army, taking part in most of the major actions of that campaign including the landings in Sicily and Anzio and the Battle of Monte Cassino.The regiment was armed with Bishop self-propelled guns during the Sicilian campaign and part of the Italian campaign but in early 1944 was re equipped with the American M7 Priest self-propelled gun.