A couple of wartime pics of my dad when he was in the 53rd (Welsh) Division, Royal Welch Fusiliers. If you look carefully at the left-hand photo, you can see the black ribbons (the "Flash", as it was known) at the back of his collar... see link below for explanation.
Probably early 1945, somewhere in Europe. Dad is on the left
https://en.wikipedia.org/wiki/Royal Welch Fusiliers
Old photo showing the "Flash" and a RWF cap badge