Does anyone have any further information on the John Hermes listed here http://genealogytrails.com/mo/madison/fredericktown1890vetcensus.htm and since it says he was a vet, how did he serve?

I would like to know if he is the same John Hermes in the 1860 census in Madison county. https://familysearch.org/ark:/61903/1:1:MHZ8-M7T This is my ancestor. His wife is Mary (Hurt).