Jiff was here in 1944

[Bill Alexander]

Of further note, the Canadian Scottish officer is wearing a modified slip-on worn sewn on the tunic rather than on the epaulette. (The slip-on was always a problem when worn with officer's rank badges.) And the R de Hull officer appears to be wearing a Pacific Command formation patch.
The R de Hull was designated the 21st Armoured Regiment (Regiment de Hull) on April 1, 1946. It has had further changes in designation 1949 and 1958, but remains part of the armoured branch of the Canadian Forces.