Yep, the ribbons would go a long way towards identifying him. All it would take is noting down the ribbons, and doing a quick service-record database search for the set of people with that set of awards. Then look at the service record photos and see which matches the best (paying particular attention to the ear), and/or who has a connection to the guy whose FaceBook account it was posted under.
If he was smart, he's have removed some of his real ribbons, and added some from a friend.
ID by the ribbons was the first thing I thought about too. Hope he remains anonymous.