Bill,
I think the problem is what your looking for. I don't believe there was a 480th MP Company, as the 480th would be a regimental designation. Companys would be Able, Baker, Charlie, Dog etc.
I looked through the archives and there is no 480th MP Regiment. Maybe the numbers got mis-remembered.
What you would be looking for, (and I'm making this up) would be ; "B" (Baker) Co, 1st Battalion, 480th Military Police (Escort) Regiment.
But I've been wrong before.
A bit off topic but while stationed in Italy in early 70s I met a former WWII pow held in California where he told me he learned English from the guards. He was a interesting individual and worth the time to listen to. He had no problem with me or other Americans and sold me wood at his lumber yard resonable.