Brigadier General David K. MacEwen was the 59th adjutant general of the United States Army and executive director, Military Postal Service Agency, located at the Human Resources Command, Fort Knox, Kenrucky.

[2] In 1981, he graduated Clarion University of Pennsylvania, with a business management degree.

[2] He completed a master's degree in national security and strategic studies at the U.S.

[2] As of 2014, he was chief of staff of the U.S. Army Human Resources Command.

[3][1] His other significant assignments included commander, 1st Personnel Command; chief of the Colonels Management Office; executive officer of the Vice Chief of Staff of the Army; and commanding general of the U.S. Army Soldier Support Institute.