With the increasing availability of the powerful OQF 6 pdr and numerous modifications, the Churchill III was a solid reliable design which eliminated the 3-inch hull howitzer and equipped the tank with the better main gun in a box like, welded turret. With production starting in March 1942, the Churchill III saw action at Dieppe, El Alamein, Tunisia, Italy and North West Europe.
An example of its excellent durability is shown when, during two actions in North Africa, six Churchill III were hit 106 times with Armour Piercing and High Explosive rounds. Despite each tank being hit 17 to 18 times on average, only 1 tank was destroyed, with another immobilised with track damage and a third suffering a jammed turret. This compares well to other tanks of the time which were typically knocked out by the first hit! Before the Normandy invasion 242 Churchill III tanks were retrofitted with 75mm guns and were known as Churchill III* (75mm).