I noticed -from information that FASTBOAT TOUGH put up- That Kangaroo APC's were in action with Canadian forces from early August 1944, rather than October as noted in SPWW2. M7 Priest Kangaroos seem to have been the first used -leading to the wonderful nickname "unfrocked Priests"- followed by other conversions.
Eventually the Canadians had a full regiment of Kangaroos and they were also used by British forces. Kangaroo type conversion APC's were also used in Italy. They offered much better protection than M3 halftracks.
I also note there was a Churchill Kangaroo APC (maybe Post WWII)?
http://www.tanks-encyclopedia.com/ww...ngaroo-series/
With thanks to FASTBOAT TOUGH for the link.