Your Civil War ancestor may have served from a neighboring state to help that state meet its quota. Don’t limit your Civil War service record searches to the state in which your person lived. They may have served after crossing the state line.
And never assume that there’s only one guy with your somewhat unusual name. I originally thought these two George Trautvetters were the same person who served in an Illinois and a Missouri unit. As it turns out, they were likely first cousins.