Having seen Dunkirk over the weekend, I was pushed to ask a question: The did the Highland Regiments eliminate the kilt in the battle dress uniform? It was my understanding that it occurred sometime in early 1940. I'd assumed that units already in France wouldn't change in the field. Also, there are photos of the Highland Brigade pipers in POW camps in full kilt. This won't be much of a spoiler but Highlanders in the movie are not kilted. So, when did the uniforms change?

-Eric from Seattle (first time poster)