Grenier is a very good book on colonial war making, specifically vs. Indians. He's taking on Russel Weigley of The American Way of War fame, and Guy Chet's Conquering the American Wildness: The Triumph of European Warfare in the Colonial Northeast.
Gnaddenhutten is one of many, many massacres we perpetrated while practicing "extirpative war". Grenier's actually got the balls to say the first American Way of War was a-ok with torturing and killing noncombatants, burning their homes and fields, and paying people for scalps in order to win. He's also got the signed documents and letters from the Continental Congress, Founding Fathers and state legislatures to prove it, which is the important bit.