Theodore W. (Walt) Tiedeken, 72, a retired Army colonel who was a civilian official of the Army Engineering Topographic Laboratory at Fort Belvoir for 13 years before retiring a second time in 1970, died of cancer Sept. 22 at the Hospice of Northern Virginia in Arlington. He lived in Falls Church.

Col. Tiedeken was a native of Camden, N.J., and a 1931 graduate of Lehigh University. He spent five years as an engineer with the Tennessee Valley Authority before being called to active Army duty in 1940.

During World War II, he served with the Corps of Engineers in Europe and the Pacific. After the war, he commanded an engineers battalion in the Philippines, was our mission chief of the Inter-American Geodetic Survey in Peru, and was deputy director of the IAGS, before retiring from active duty in 1957.

He remained with the Army in a civilian capacity. He retired as an Army civilian as assistant chief of the geographic sciences division of the Army Engineering Topographic Laboratory.

Col. Tiedeken was a member of the Society of American Military Engineers, and the Military Order of Carabao. He was a member of St. James Catholic Church in Falls Church and a 4th degree member of the Knights of Columbus.

Survivors include his wife, the former Frances Gaither, of Falls Church; a son, Theodore G., also of Falls Church; a daughter, Mary T. O'Connor of Croton-On-Hudson, N.Y.; a sister, Mary Bigley of Audubon, N.J., and one grandchild.