This is a general question about Canadian Army personnel in WW2 - I have a Nominal Roll for an Australian Unit ('M' Special Unit - basically supporting operations behind Japanese lines) which lists several personnel who I assume are Canadians - e.g. 22003 SSgt GW Anscomb ex VCANK, Canadian Army; 51273 Sgt JD Arnsten ex VCANL, Canadian Army; 587335 SSgt GN Brent ex VCANA, Canadian Army; etc - most of them (possibly all) look to be in engineer roles.
Is there anywhere that their service records might be freely available or where info about the units might be freely available.