Ok, so my grandfather passed away and I was unable to get him to speak in depth to me about his service during World War 2.
We are of German decent he was 2nd generation German American who served in the US Army. German wasn't spoken in our home, however I am certain that my great-grandfather, his father did speak German, so it would not be improbable that he spoke some German.
The little information I could gleen was that he served in " The Battle of the Bulge." What he specifically did , I am not aware of. He had shared some of his memorabilia with me which included a German helmet, Luger pistol, and the one thing that sticks out most in my mind now is a "minox camera." Minox cameras are very specific in their use....
The helmet and the pistol are something many returning vets may have picked up and brought home. The camera though isn't something that would be. Combining all 3 leads to more questions than answers. What is it he could have possibly done during his time in theater. Unfortunately with him no longer living I will never be able to get conclusive proof, but I'm hoping you might point me in a plausible direction.
r/AskHistorians has a guide here on retrieving family members' military records, if you do not already have them (more direct link here) Records over 62 years old (rolling discharge date prior to 1954 in this case) are considered archival, and can be accessed by anyone for a copying fee. Keep in mind that a significant portion of WWII-era records were destroyed in a catastrophic fire at the National Personnel Records Center in 1973, and so what is available might only be fragmentary, if it survived at all.
If you do end up finding your grandfather's records through any means, here is some more helpful information that can help you decipher them. I would be glad to help you decipher the more cryptic parts.