The tracked vehicle is a British Universal (Bren Gun) Carrier. The original role envisaged for the Universal Carrier was for a fast, lightly armed vehicle to carry infantry across ground denied by small-arms fire and specifically, the Bren light machine gun and its team, hence the name Bren Gun Carrier. (NB: A broad parallel can be drawn between that concept and the tactics of the APC (M1 L3A1) Troop which carried an Infantry Company. Each infantry section, comprising ten men [one section to a vehicle] possessed a light machine gun crew of three men and a BREN GUN.
Source :
http://www.diggerhistory.info/pages-armour/allied/bren_carrier.htm
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