John William "Mick" Nicholson Jr. is a retired United States Army four-star general who last commanded U.S. Forces – Afghanistan (USFOR-A) and the 41-nation NATO-led Resolute Support Mission from 2 March 2016 to 2 September 2018, succeeding General John F. Campbell. He was the longest-serving commander of NATO forces in Afghanistan until 2021, having been the senior officer in theatre for 2 years, 6 months. He was previously commanding general, Allied Land Command from October 2014 and commander of the 82nd Airborne Division. Nicholson is the son of John W. "Jack" Nicholson, also a retired general officer in the United States Army, and is distantly related to British brigadier general John Nicholson.