You should contact the 1st Armored Division association for the list of the prisoner of war during wwii :
1st Armored Division Association,
PO Box 2088, Elizabethtown,
For more info call (270)737-0901, FAX (270)765=7313 or
With this name, you can go on the National Archive website : http://aad.archives.gov/aad/fielded-search.jsp?dt=466&tf...
For each name, you access to the POW files where name/army id number/whe he was taken prisoner/which camp he was prisoner. So you can see which soldier from this division was taken prisoner the same day of you father.
Good luck for your research.
Best regards from France.