[sapper740]

is the "Tank Arm" badge, meaning, quite simply, that they are tankers. It's not that they are members of the Royal Tank Regiment or the Royal Tank Corps, but simply "tankers". It's an "Arm of Service" badge that was only worn on their Service Dress uniforms, not their battle dress. What I'm seeing is three young Officer-cadets or newly commissioned officers (I don't remember if they had their rank showing) at the Armour school. They wear their home unit's cap badges on their berets, the school's collar dogs, as they are temporarily posted there, and of course, since they are tankers, they have the "Tank Arm" badges on their right arms only. I'm sure any zipperhead will confirm this. Darryl Zinck hasn't posted here for a while, I'm sure he knows. Derek.

P.S. The fuzzy cap badge of the middle officer has the general shape of the Elgin Regiment