Levi J. Delaine, 68, a retired teacher in the D.C. public school system and a former Air Force master sergeant who served in two wars, died of cancer Tuesday at the Walter Reed Medical Center.

Mr. Delaine was born in Marion, S.C., and graduated from Allen University in Columbia, S.C. He was a school principal in South Carolina from 1935 until 1943, when he began his military career with the Army Air Corps in World War II. He served in Europe and the Pacific and rose to the rank of chief warrant officer.

In 1946, he was stationed in Washington and was an instructor in the Reserve Officers Training Corps at Howard University. He served in Korea during the conflict there and retired from the Air Force in 1964.

Mr. DeLaine then became a teacher in the D.C. public school system. he taught at Spingarn High School and Kelly Miller Junior High. He retired in 1977.

Mr. DeLaine, who lived in Silver Spring, was a steward at the Turner Memorial A.M.E. Church in Washington and was active in other church activities. He was a member of the Montgomery County Human Relations Committee and the White Oak Civic Club in Silver Spring. He was a member of the Derby Club in Washington.

Survivors include his wife Eula G., and a son, Levi, both of Silver Spring, and a sister, Willie D. Townsend of Trenton, N.J.