First off, I'd like to thank Smithy for getting me a "starter kit" of information on this subject, via PM. The main question I want to pose concerns uniforms. I've seen a few pictures of this sort of thing: http://i275.photobucket.com/albums/jj290/safdkiltie/2ERS00383.jpg The U.S. pilot wings over the left breast, RAF on the right. What I can't seem to find is an example of a tropical shirt, wool or cotton, with the same arrangement. My interests and limited knowledge are currently in the Pacific. The picture linked to above is of a man named Lt. Robert T. Davis (who received the Distinguished Service Cross after effecting a rescue under particularly dangerous circumstances ). He served with the 2nd Emergency Rescue Squadron in the Pacific, but that's about all I can find on him. Another picture on the site I cribbed the one above from shows him in what looks to be a cotton shirt; dress wings over the left pocket and his rank insignia on the collar. However, this obviously isn't a definative representation of the uniform. As you go through the photos on the 2nd Emergency Rescue Sqdn website, the officers and men wear all manner of uniform in various stages of formality ( and lack thereof...): wings, no wings, rank, no rank, patches, no patches, etc... So, back to the original question: Would a US pilot who had formerly served with the RAF wear both devices on a summer/tropical wool or cotton shirt? As long as the thread is open, I invite any and all discussion and information about Americans serving with the RAF and commonwealth; resources such as books, websites, and so on. Whatever you care to share or discuss, as my question is a very specific one. Thanks to whomever can address my original question.