The Churchill Tank was a British heavy tank of the Second World War. It had armour up to a thickness of 101 mm of the front of the hull and 89 mm around the turret. Early models were armed with a 2-pounder gun in the turret and a 3-inch howitzer in the front plate, later models the 6-pounder turret gun without the 3-inch howitzer and the last model, the Churchill VII was armed with a 75 mm gun in the turret. Early models were produced in a hurry in response to the imminent threat of invasion and as such proved mechanically unreliable, a feature which resulted in their poor performance with the Canadian troops at Dieppe. The main variant, the Churchill IV, had a top speed of 16 mph and a range of 145 km. The Churchill Tank was produced in a number of variations, including an assault model, the AVRE which was armed with a short-range demolition mortar; a bridge-layer; a 3-inch gun carrier; recovery vehicle and the Churchill Crocodile with a flamethrower. Research Churchill Tank