Well,
This story is a long but interesting read if you have some time to spare. Of note, is the comment:
"After the Dunkirk evacuation, the war took on a much more serious tone. Our Engineers left, to be replaced by a battery of 2pdr anti-tank guns of the Royal Canadian Artillery. This was a Portee battery where the guns were carried in the back of 15cwt Chevrolet trucks. Their garage and mess hall was situated in what is now Alfriston Motors garage. We soon discovered the delights of Canadian bacon with maple syrup, Sweet Caporal cigarettes and many other Canadian goodies."
While the Author was later a Driver, Armoured, in the British Army, and would therefore identify any 101"wb Portees as 15cwts, these actually sound like CGT Portees. Which unit would they be?
Read on, it's an interesting story as he later becomes part of the 1st Canadian Army's push through Holland and into Germany.