I just wanted to share a couple of dressings in my collection that I thought were interesting. I picked up the Royal Navy dressing on the left recently and I found the US Navy dressing years ago in a vintage clothing store that had once been Bruce Lee's dojo near the University of Washington. I've heard that 'Navy Medical Service' dressings were used by the RND and that the US Marines carried First Aid Packets like the one shown in the trenches.

First World War Royal Navy and USN Field Dressings