As the 39th Chief of Staff of the Army, Gen. Mark A. Milley has spearheaded the Army’s transformation to build readiness. Earning his commission from Princeton University in 1980, Milley has gained a reputation for being a Soldier’s Soldier and battle-tested commander throughout his 39-year career. An infantry and special operations forces officer by trade, the Army Ranger’s previous assignments include commanding general of Forces Command (FORSCOM), III Corps, and the 10th Mountain Division. We sat down with him to discuss total Army readiness and the importance of sustainment for mission success.