First link is behind a paywall, second link doesn’t have anything about war crimes, third link is an academic paper talking about surrendering germans and how they were often killed by Canadian forces. It notes that killing of surrendering forces was an all participants type thing not entirely specific to Canada though. Even notes that Britain was particularly bad about surrendering enemies due to fake surrenders in the South African War just a decade or so before.
Hey man you gotta at least help make the pie.
;)