Retired Army Lt. Col. Glen William Trindal, 85, who served on active duty with the Corps of Engineers for 20 years before retiring in 1955, died of cardiac arrest Nov. 27 at DeWitt Army Hospital at Fort Belvoir. He lived in Arlington.

His last assignment involved new construction at the Joliet Ill., arsenal. He then lived in Florida and Chapel Hill, N.C., before moving here 19 years ago. He had worked as an engineer for the Miller construction company in Arlington until 1970.

Col. Trindal was born in Ruthven, Iowa. He served with the Army in World War I and then was with the Army Reserves and the National Guard until going on active duty with the regular Army in 1935.

Before his active duty, he was an engineer in Wisconsin and Minnesota and at one time worked for the U.S. Forest Service in Minnesota. His assignments included posts in Panama, Ecuador and Peru. After World War II, he was stationed in Germany and then Japan.

Col. Trindal was a 32nd degree Mason and a member of the Retired Officers Association and the Reserve Officers Association.

His first wife, the former Mabel E. Steele, died in 1948.

He is survived by his wife, Marguerite M., of Arlington; a son by his first marriage, Wesley S., of Alexandria; two stepchildren, Patricia Young of Arlington, and James V. Schick of Alexandria; a brother, George D., of Eau Claire, Wis.; one grandchild and four stepgrandchildren. g

The family suggests that expressions of sympathy be in the form of contributions to the Army Emergency Relief Fund.