http://i.imgur.com/Ju5t0xP.png

I blurred the face just out of courtesy, but if it's of any relevance, the man on the picture has a mustache. Any details, such as which army or even unit this person belonged to is appreciated.

PS: There is a cap/hat on the right, it can be easy to miss.

PPS: I am only guessing that this is a WWI uniform, so correct me if I am wrong.

PPPS: I hope this qualifies, as a question about the human past, as the picture includes a human from long ago. If this breaks any rules, please be so kind as to point me in the right direction.

Thank you for your time /r/AskHistorians