[Frank Kelley]

That is a particularly nice portrait of Forbes, you can clearly see he wears a small OSD General Service cap badge and the handsome bronze collars of his Corps.
Notwithstanding, some officers did wear the SAMC cap badge on their SD caps.

Originally Posted by milhistry

And here is another of an officer, Capt Forbes MC. http://www.iwm.org.uk/collections/item/object/205294886 Can't quite make out the shoulder title but likely to be S.AFRICA or SOUTH AFRICA?