I apologize for having something off-topic from World War II. I havn't found a good WWI forum in which to ask this question, so I turn to you. I know that some of you are knowledgable about the first Great war as well. For quite some time now, I have been trying to find out what unit my great-grandfather served in during World War I. It is known that he was in the U.S. Army, and that he was in France. What time period I do not know. I would love to find out his unit so I can trace its history, and see where my great-grandfather fought. Recently, a distant relative of mine sent me a photo of my great-grandfather that I've never seen before. I was hoping that maybe someone here might recognize the uniform as belonging to a specific unit or something. I know it is a long shot, but if you don't try to play the game, you never win, right? This is the photo that was sent to me. My great-grandfather is on the left: This photo has been in the family for quite some time. It is my great-grandparents: Thanks for having a look!