Thanks, everyone. I'm now wondering what the significance of the chevrons might have been...
(This came from a collection of negatives left by my father who was a Brummie Cameron Highlander. We'll never know who this lady was but I'm pretty certain it was a Brum picture. A number of the others were taken at a barracks in Edinburgh in 1919, some of excellent quality and showing various of his mates, often with girls, celebrating their survival. Fascinating stuff but not really relevant to this Birmingham forum).
Chris