John J. Pershing

Pershing is the highest ranked military officer buried at Arlington and the second highest ranked officer in history. He was promoted to General of the Armies in 1919, which is equivalent to a six star General, and was put in charge of all branches of the military service. He led the American Expeditionary Forces during World War I and was mentor to many generals including Patton, Eisenhower, Marshall, and Bradley. The only other person to obtain this rank was General George Washington who earned the rank posthumously in 1976.