Retired Army Col. Desloge Brown, 65, a 35-year Army veteran who later worked for the Federal Power Commission, died of leukemia Friday at the Baltimore Cancer Research Center.

Col. Brown was born in College Station, Tex. He enlisted in the Army in 1933, won an appointment to the Military Academy at West Point, and graduated in 1938.

He served in the Pacific during World War II, and was awarded a Bronze Star. After the war, he earned a master's degree in civil engineering at Cornell University, and came to Washington in 1947 to work for the Army Map Service.

He held a number of other posts, including that of deputy director of the Industrial College of the Armed Forces at Fort McNair, from 1966 until he retired in 1968.

Col. Brown joined the Federal Power Commission in 1968, and served as a division chief and worked with the joint American-Canadian board that regulated use of the St. Lawrence River. He retired from the FPC in 1977. He was a member of the Permanent International Association of Navigation Congresses.

He had been active in the Mount Vernon Civic Association for the past eight years.

Col. Brown was a fellow of the American Society of Civil Engineers and the Society of American Military Engineers.

He is survived by his wife. Catharina V., of the home in Alexandria; two sons, Richard D., of Washington, and Martin D., of Madison, Wis.; a daughter, Anne T., of Alexandria; three brothers, Jules D., of New Orleans, Levi, of Atlanta, and George P., of Columbus, Ga., and three sisters, Zoe, of New Orleans, and Emily Murphy and Jane, both of St. Louis.

The family suggests that expressions of sympathy be in the form of contributions to the American Cancer Society.