Mike,
Give me his date of birth and place, including county. The county he's in in the 1860 census. His wife's name and the names of any male siblings also of military age and I might be able to help.
There are several more Thomas Dixons under various spellings including Dickson, Dixson, Disxon, etc. They could fight, but sometimes they couldn't spell.
I have access to an index of Kentucky CW pensions, but I need the wife's name to help narrow possibilities.
Jim Martin