Welcome to the forum. There are plenty of people that can and will help you in your search...so never give up. From the photo I can tell you that he was a Luftwaffe (Air Force) Officer. His rank in the photo is a Oberleutnant and he is a pilot. You tell by the fact he has been awarded the Flugzeugführerabzeichen (pliots Badge). He has also been decorated with the Iron Cross 1st Class and 2nd Class. This could be for an act or acts of bravery or shooting down a number of aircraft.
If you have any other photos, letters or documents then post pictures of them as well. This way we can find more infromation for you.
Good luck in your search.