text: I'm assuming you mean American women.\n\nSo 1778, Deborah Samson of Plympton. But, we really don't know who was first, there may have been women fight earlier than that, but back then the women would have disguised themselves as men, and if they weren't wounded we wouldn't found out about them. \n\nBy the way Molly Pitcher may not have exited.\n\nSee link.\n\nGood reading