Retired Army Lt. Col. Edwin Alexander Harling, 66, a 22-year veteran who served in World War II and the Korean conflict before retiring in 1962, died Friday at Commonwealth Doctors Hospital after a heart attack. He lived in Fairfax.

He was a civilian construction engineer at the Washington Navy Yard for 19 years before retiring a second time in February of this year. He had been an area resident since 1958.

Col. Harling was an infantryman with the 85th Infantry division in North Africa and Italy during World War II. During those years he was awarded the Silver Star and Bronze Star and three Purple Hearts. He was a combat engineer in Korea during the conflict there.

His other tours of duty during his Army career included posts in the Philippines and Newfoundland. He was stationed in the office of the chief of the Army Corps of Engineers when he retired from active duty.

Col. Harling was a native of Lynn, Mass., and a 1935 graduate of Clemson University. He joined the Army in 1940.

Survivors include his wife, Margaret Brice Harling of Fairfax; two daughters, Barbara H. Addams of Washington, and Margie H. Pylant of Fairbanks, Alaska, and two grandchildren.