It's not that simple. You mentioned "Pittsville," Missouri; George in his reply said that 18 year old John W. McCoy enlisted at "Pittsfield." I cannot find "Pittsfield" in either two different online historic Missouri town name online records, Ramsay's and Moser's. However, Pittsville, Missouri was then and still is located in Jackson Township, northwest Johnson County. There was a household in Jackson Township according to the 1860 census headed by 54-year-old, Virginia-born farmer Lewis McCoy that included his wife and three children, all the kids and wife born in Missouri. The 1870 census shows this family moved a few miles east to Columbus Township in north-central Johnson County. The 1860 census shows the second McCoy of Johnson County to be 34-year-old, Maryland-born farmer Benjamin E. McCoy and his Missouri-born wife and their three Missouri-born daughters aged nine and younger living in Madison Township of west-central Johnson County. There seems to be no record for the Benjamin McCoy family in this region in the 1870 census.
The online military service card for 18-year-old Private John W. McCoy I saw differs slightly from the Compiled Service Record George cited for this soldier. Everything is basically the same except the online record for the Missouri State Archives fails to mention that McCoy was wounded in the knee 11 January 1863 at Arkansas Post, AR, and that after he enlisted, McCoy was mustered in at St. Louis and where the CSR states that McCoy enlisted 19 November 1861 at Pittsfield, the online record says that he enlisted that date at Sedalia, county seat of Pettis County, the county just east of Johnson County. I didn't see a McCoy family in either the 1860 or the 1870 census for Pettis County, but this makes the only two McCoy households in Johnson County seem more plausible. Parts of Missouri, including west-central Missouri, were in an uproar during November 1861. This means that IF John MCoy was part of the Lewis McCoy family of northwest Johnson County, he very well could have traveled to Pettis County to enlist.
In my previous message I typed "George Confederate Cememtery, when I meant to type "Georgia Confederate Cemetery." Sorry about that.
There are lots of McCoys across Missouri in the 1860 census, but I narrowed my focus to those two families in Johnson County because John W. McCoy enlisted in "Pittsfield" or "Pittsville" or Sedalia, and Pittsville in northwest corner of Johnson County was not far from Pettis County. Single men and especially teenagers were often missed by the census takers, and that is why I am wondering if Private John W. McCoy was part of the Lewis McCoy family reflected in both the 1860 and 1870 census readings in Johnson County. This is conjecture, of course.
Bruce Nichols