Well, a 'Commonwealth uniform for the Mediterranean Region' is a better title. Because most of the Commonwealth soldiers wore the same uniforms- With bagdes stating the name of their country and some cultural differences making them distinguished from each other. Like this one has a badge saying 'New Zealand' on the arm- But it could be India, Sudan, Egypt, Canada, even Poland.
Ah, I didn't know that the Commonwealth fought together as such a cohesive group. That's very interesting, and not something they really taught at school. Most of the focus always seemed to be on Australia and New Zealand.