1776? He'd be "The Red Coat" and be British.
Or maybe "The Redder Coat"? "The Reddest Coat"?
They did do the "American Civil War" Captain America thing with him being a Union Soldier imbued with spiritual powers by Native Americans, the "Essence of the Land" or something. His archenemy was a crazed Union Commander also affected by the mystical power who became "The White Skull" and founder of the KKK.