The Second Battle of Pyramid Lake (also known as the Battle of Truckee River) took place in response to the U.S. defeat at the First Battle of Pyramid Lake. A well-organized force of militia and regulars, under the capable leadership of famed Texas Ranger Col. John C. "Jack" Hays, defeated the Paiute warriors under Chief Numaga. This was the final engagement of the Pyramid Lake War of 1860.