Not a problem. Your post understood.

M J Saunders, enrolled as a substitute Oct 3, 1862, Co "G", Starke's 28th Mississippi Regt. He died at Grenada MS, Nov 22, 1862.

Should have thought of Col Peter B Starke's cavalry immediately, but didn't make the Mississippi connection. Widows frequently had only vague information about their husband's military command, so this is by no means unusual.