The necessity to protect the armoured units through enemy aviation, squeezed the English army to produce this self-propeller laden with a Bofors 40 mm cannon, utilizing the hulls of Crusader armoured tank, considered out-dated by the finish of 1943. The cannon finished up being put in a tower with armoured plating capable guarantee the specified protection towards gunners. The Crusader AA was indeed distributed towards environment detachments the security linked to control devices by the finish of 1943. Some detachments is at reality used through the whole French intrusion after the landing in Normandy, but due to the environment superiority for the allies, the German environment threats proved inexistent, this means using this self-propeller anti-aircraft was not numerous or null.
