For the location of 3 Cdn Medium Regt on 8 Feb 45, you might try the WW2talk forum http://ww2talk.com/index.php
. I'd suggest the Unit History/Canadian or Unit History/Royal Artillery subforums. Rob Dickers, a member there has written a history of 2 Cdn Army Group Royal Artillery (2 Cdn AGRA), the higher formation that 3 Cdn Medium Regt served with. I think he has access to War Diaries that would provide their location for Veritable and as a long shot, info on the circumstances of his casualty.