Bdr. Davis with Pte's MacLean and Ivermee, No.5 Commando 3 troop.

The photo states "Left - Bombardier Davis? Artillery. Middle - F W McLean. Right - Ivymee."

Update from Nick.. The person described as Ivymee will be
Pte R.H.W. IVERMEE. Also F.W Maclean was a Pte.
Bdr Davis could be either Bill or Donald