Sandy,

I checked the Soldiers and Sailors System for a list of all Soldiers with the name Pars, north and south. The list had only one man on it.

William Pars, in a private and out a private with no company showing only 2 S.S. 27th Michigan Infantry..... I do not know what S.S. stands for maybe 2ND Company Sharp Shooters?

William Pars also shows the alternate name of William Pierce 27th Michigan Infantry, again unkown company.

If this is your man, the 27th Michigan was a hard fighting unit that fought many battles.

More questions than answers, sorry.
Gary D. Bray