In my reenacting career, I have held four.
When I played a Confederate first sergeant in the 17th Mississippi, I was Taylor J. Hamilton, a carpenter from Columbus, Ohio, that went South to join the Confederate cause.
When I played a Union soldier of the 76th OVI, I was Jacob T. Hamilton, a whiskey salesman from Lockbourne, Ohio, that was enraged that his brother, Taylor, had went South to join the rebels. Jacob swore to kill his brother on sight, as did Taylor if he ever had Jacob in his sights (good thing for me, the two never met on the field of battle).
I then played an assistant surgeon with the Union army, giving aid and comfort to the wounded on the field of battle, for a very short time.
I now play a civilian reporter from Columbus, Ohio, who follows his grandson's exploits as a Union army private in regular reports to his newspaper.
Sincerely,
Unionblue