The 4 x 4 design, the "Armoured Command Vehicle, A.E.C.", 4 x 4, was indeed true to the nickname given to it by the Germans - Mammuts (Mammoths) - it was huge. Built on the very good A.E.C. Matador chassis, the armoured body could seat four officers and two radio operators. Due to its unearthly appearance and relative comfortable rear body, the vehicle was nicknamed 'Dorchester' after a famous London hotel. 416 of them were built for the British Army and the Commonwealth forces.