Let the politicians debate equal pay and pursue the folly of a war on women in America. Personally, I would like to take a moment to salute woman at war—one woman and one war in particular: Agent 355, the female covert operative of the Revolutionary War’s Culper Spy Ring. When my book "George Washington’s Secret Six: The Spy Ring that Saved the American Revolution" ,written with co-author Don Yaeger, was first released in November 2013, over half-a-million people scrambled to buy it and one of the elements that struck a chord most strongly with readers was the enigmatic figure of...