Was Deborah Sampson a red coat?

No, Deborah Sampson was not a "red coat." She was a patriot who disguised herself as a man to fight for the Continental Army during the American Revolutionary War. Serving under the name Robert Shurtliff, she fought bravely and was later honorably discharged. The term "red coat" typically refers to British soldiers, whom Sampson opposed in her fight for American independence.