I’m assuming this distinguished looking gentleman is a French military officer based on his awards. However, what rank and branch of service is he? I’m going to guess that he is a Colonel or higher in the Army. French%20Officer.jpg
Uniforms are not my thing, but I think this one is a diplomatic service uniform. The orders he’s wearing are typical for a diplomat in the French foreign service (note there are no campaign medals to accompany them, or Legion of Honor preceeding them).
Yes, a french diplomat wearing the uniform introduced in 1882 for the officials, the black feathers on the hat are characteristics (white for ambassadors and other higher grades). Certainly an early XXth century picture.
First award is the order of the dragoon of Annam, second one is the order of the black star of Benin, I don’t know for the third one.