The necessity to protect the armoured units through enemy aviation, pressed the English army to build up this self-propeller loaded with a Bofors 40 mm cannon, utilizing the hulls of Crusader armoured tank, considered out-dated by the end of 1943. The cannon finished up being put into a tower with armoured plating capable guarantee the desired security towards gunners. The Crusader AA had been distributed towards atmosphere detachments the security connected with control units by the end of 1943. Some detachments was at reality used through the complete French intrusion after the landing in Normandy, but because of the atmosphere superiority for the allies, the German environment threats proved inexistent, this means utilization of this self-propeller anti-aircraft wasn't many or null.
