Hello,
I've found a death certificate in Bretagne (France) which concerns an english soldier found on the beach on the 21. of July 1918. There is a full description of the uniform so I'm curious and would like to find more information on that man. There is his registration on the coat so maybe it can be helpfull
Here is the translation of the main informations of the certificate :
Le Guilvinec, Finistère (France). 
On the 21. July 1918 was found on the beach an unknown body, which is supposed to be an stranded english officer, male, about 40., strong build and taller than the ordinary, shaved face, almost bald, brown haired on the occipital part of the skull. He was dressed with :
- a life jacket made of gray yellow lining cloth, with copper press-studs marked "Made in England"
- a second jacket made of marine blue sheet, with two rows of four golden buttons, wearing an eagle surmonted with a cap marked "Gibres L 1" at the obverse
- a fine white sheet shirt with fake turned-down collar marked number 816
- a black silk tie
- a dark gray sheet trousers
- dark green socks
- a shoe with rubber tread type Richelieu
- fine cellular linen underpants
He was holding a bronze signals pistol, trademark Webley Soff 2d London Birmingham 116, numbered 28390, and he was holding a rocket and a threaded iron canister.
The men who found him supposed he was an english or american pilot officer. It could be an plain accident because the battlefront was far away...
The certificate is also available on my 
blog in french.
With these informations (registration, gun number) can we try to trace out this soldier ?
Thanks a lot for your help and informations !
Maïwenn
GeneanetBlog