A huge casemate structure made as an assault vehicle akin to the American's T95, the Tortoise presents thick raw sloped armour with a unique heavy punching 94 mm cannon. The A39 Tortoise is a rank IV British tank destroyer with a battle rating of 6.7 (AB/RB) and 6.3 (SB). It was introduced in Update 1.55 "Royal Armour" along with the initial British ground tree.