Cdn 1951 Pattern Canteen Carrier. WE'51 Canteen Carrier. The design of the carrier is based on the American M1910 Canteen Cover. The distinguishing features are the snap fasteners and the tab and buckles on the sides for attaching the ends of the Braces. Photographic evidence indicates that in a few instances the WE'37 Water Bottle was worn in the WE'51 Carrier, possibly by Reserve troops. The rear had wire clip attachments and the manufacturer's markings.