Ahead of the invasion of Normandy that began on D Day, 6th June 1944, the 6th Scots Guards Tank Brigade was formed in England and included the 3rd (Tank) Battalion Scots Guards, equipped with Churchill tanks. In July 1944 they landed in France and would serve from then on mostly attached to the 15th (Scottish) Division. Designed as a heavy infantry tank to replace the Matilda II, the Churchill prototype was completed in June 1940 and the type entered production in June 1941. The design was largely influenced by the British Army's experiences with trench warfare during WWI. As a result, the Churchill was a large, heavy (38 tons), and relatively slow machine, built to traverse heavily cratered landscapes to take on lightly armored infantry. The small turret significantly restricted the size of armament that could be fitted to the Churchill but it's heavy armor made it much more resilient than contemporary allied tanks.

Info: Corgi Showcase Churchill MkIII - British Army 6th Scots Brigade, 1943