 Complete the following phrase:  In November 1942, the division was deployed to Tunisia for Operation Torch. Now equipped with Valentine Mk III and Crusader Mk III tanks, the regiment saw action in the Tunisia Campaign for some time, including taking heavy losses defending Thala in the Battle of Kasserine Pass in February 1943 during which fourteen tanks were put out of action. After this, the regiment was withdrawn and refitted with M4A2 Sherman tanks. In April, the regiment attempted to take the Fondouk Pass during which thirty-two tanks were put out of action. The campaign in Tunisia came to an end in May 1943, with the surrender of almost 250,000 German and Italian soldiers who subsequently became prisoners of war POWs. Most of the 6th Armoured Division minus the 1st Guards Brigade then deployed to the Italian Front in March 1944, and fought to breach the Gustav Line, taking part in Operation Diadem, the fourth and final Battle of Monte Cassino. The regiment advanced to the Gothic Line, and spent the winter thereat points, serving as infantry rather than as an armoured unit, due to the static nature of the trench warfare there. After the final breakthrough in April 1945, codenamed 