Unclear WW2 Separation Record

I have my grandfather's "Separation Qualification Record" as well as his record and report of separation. The separation qualification record says that he "Served with the 9th Infantry in the European Theater of Operations from August 1944 to June 1945, and with the 740th Engineer Base Equipment company from July 1945 to December 1945 in the Asiatic-Pacific Theater of Operations." The unit that is listed on his report of separation is the 740th Engineer Base Equipment company. Because of these circumstances, I'm having trouble determining what unit he served with in the European theater. I don't know if "9th Infantry" refers to the 9th Infantry Division; another possible option is that he was with the 9th infantry regiment of the 2nd infantry division. There might be other possibilities as well, I'm not sure. I have a newspaper scrap that says he was "a 2nd Division infantryman" and that he received his wounds in Brest, France. However, his report of separation says that he was injured in Belgium. So I'm not sure whether to trust the newspaper article. I'd like to try to find out why he has a Distinguished Unit Badge and get an idea of his possible path in Europe, but I'm stuck at the moment without knowing even his division. Any help would be greatly appreciated. His name is Lester Butler Dean.