
Mark Esper
27th U.S. Secretary of Defense
Mark Esper served as the 27th U.S. Secretary of Defense from 2019 to 2020 and as the 23rd Secretary of the Army from 2017 to 2019. A West Point graduate, he served as an infantry officer with the 101st Airborne Division in the Gulf War, and later held senior roles at the Heritage Foundation, the U.S. Chamber of Commerce, and Raytheon.
