Trying to ID some WWII - era medals

My mom's father died when she was a child, and her mother refused to talk about him; we now suspect that her mother was already dealing with severe but undiagnosed mental illness.

My mom has since found a number of medals and other items his father had from WWII.

We know that he was a US service member who served in the Army in Europe. His files were among the ones affected by a fire at the National Archives, and so we only have a fraction of his records. What we do know is that he was a crew member on board a tank at some point, and he was also in the military police. Documents we have found indicated that he may have also been infantry at one point, and we've found material suggesting he was a glider trooper during the time he was infantry.

He was with the US military in Africa, then was part of operations in the Middle East and Europe, where he ultimately served as part of the army of occupation. My maternal grandmother? War bride. (We're trying to translate documents we've since received regarding her half of the family; it's slow going as none of us ever learned German for a variety of reasons.)

My dad has been able to identify a few items that he had, as well as a number of his medals and decorations. He was apparently a first sergeant when he died, having chosen to make a career of the Army after the war. But many others we can't figure out, including several foreign items he somehow acquired at some point.

Is there a place we can go to help figure out what these items might be?

Thanks.