Retired Air Force Col. William J. Grundmann, 57, a World War II bomber pilot who later served as an official with the Defense Intelligence Agency, died of cancer Monday at his home in Silver Spring.

Col. Grundmann received his commission in the Army Air Corps in 1943 and was a B-24 (Liberator) pilot with the 8th Air Force in England during the rest of World War II.

Later assignments included intelligence posts in Washington and Germany. He also served tours as a pilot with the Strategic Air Command and as a professor of aerospace science at Brown University.

He was head of the DIA Foreign Liaison Branch in Washington from 1966 to 1968, then spent four years as commander of the DIA Liaison Detachment in London. He retired from active duty in 1973.

His decorations included the Distinguished Flying Cross, the Legion of Merit, and the Air Medal.

He was executive director of the Tucson Trade Bureau in Arizona and then was information director at the University of Arizona Arid Land Studies Center before returning here in 1979.

Col. Grundmann was a native of New York City and a graduate of the University of Maryland. He earned a master's degree in teaching at Brown University and a master's degree in library science at the University of Arizona.

Survivors include his wife, Kathleen, of Silver Spring; four sons, William R., of Kensington, Timothy, of Washington, Denis, of San Franciso, and Michael, of Carson City, Nev.; two daughters, Mary Kathleen Rabe of San Diego, Calif., and Maureen, of Newport, R.I; a sister, Mary Stoeger of Yorba Linda, Calif.; a brother, John F., of Torrance Calif., and one grandchild.