David K. Warfield Jr., 66, retired Army lieutenant colonel who later worked at the Naval Ordnance Laboratory and who took part in amateur theatricals, died of cancer Tuesday at Walter Reed Army Medical Center.

Col. Warfield, who was born in Milroy, Pa., and grew up in Muddy Creek, Pa., attended Wheaton College and Pennsylvania State University. In World War II, he enlisted in the Army, was commissioned through Officers Candidate School and served in the Pacific. At the end of the war, he was stationed in the Philippines, and while there he earned a bachelor's degree at the University of the Philippines.

His postwar assignments included Hawaii and various posts in the continental United States. He was the adjutant general of Fort Gordon, Ga., when he retired in 1964.

In 1965, he moved to Silver Spring and became an administrative officer at the Naval Ordnance Laboratory at White Oak. He retired in 1973 for reasons of health.

Col. Warfield was a member of theatrical groups at the military posts where he was stationed. For a brief time after he left the Army, he worked for the Pocket Theater and the Theater Under the Stars in Atlanta. wHe also was active in the theater group at the Naval Ordnance Laboratory.

His first wife, the former Margaret Masland, died in 1952.

Survivors include his wife, Juanita C. Warfield, of Morgantown, W.Va.; two children by his first marriage, Dr. David K. III, of Decatur, Ga., and Emily W. Thompson of Gainesville, Ga.; one brother, Richard G., of Fawn Grove, Pa., and four grandchildren.