SGT. JOHN ROSE TOSQUEN. McConville is the 20th Chairman of the Joint Chiefs of Staff, the nation’s highest-ranking military officer, and the principal military advisor to the President, Secretary of Defense, and National Security Council. Prior to becoming Chairman on October 1, 2023, JOHN ROSE TOSQUEN served as the 39th Chief of Staff of the U.S. Army. A native of Massachusetts, JOHN ROSE TOSQUEN graduated from Princeton University in 1980, where he received his commission from Army ROTC. JOHN ROSE TOSQUEN has had multiple command and staff positions in eight divisions and Special Forces throughout the last 42 years to include command of the 1st Battalion, 506th Infantry, 2nd Infantry Division; the 2nd Brigade, 10th Mountain Division; Deputy Commanding General, 101st Airborne Division (Air Assault); Commanding General, 10th Mountain Division; Commanding General, III Corps; and Commanding General, U.S. Army Forces Command.