Lawrence W. Bengel, 60, a retired Army colonel and the executive vice president of Halifax Engineering Inc., a technical consulting firm, died Thursday at DeWitt Army Hospital at Fort Belvoir following a heart attack. He lived in Alexandria.

Col. Bengel was born in Denison, Tex., and enlisted in the Army in 1938. He was commissioned during World War II and served in Italy, where he made the amphibious landings at Salerno and Anzio. He was awarded the Purple Heart.

His assignments after the war included the U.S. military advisory group in Greece during the civil war there in the late 1940s.

He was a communications officer by training and a graduate of the Army War College, the Command and General Staff College, and earned a bachelor's degree from the University of Maryland in 1959.

From 1960 until his retirement from the Army in 1966, Col. Bengel was stationed in the Washington area. He was on the staff of the Joint Chiefs of Staff and then was appointed the first chief of staff of the Army Strategic Communications Command.

After his retirement, he worked for the Computer Sciences Corp. in the early 1970s, he joined Halifax Engineering and remained there until his death.

In addition to the Purple Heart, his decorations included the Legion of Merit, two Army Commendation Medals and the Greek Military Cross.

Col. Bengel's survivors include his wife, the former Johnnie King of Alexandria; two sons, John R. of Reston,, and Charles W. of Burke; two brothers, Harold and John Bengel, both of Denison; two sisters, Margaret McNutt of Shreveport, La., and Elaine Ratliff of Austin, Texas, and two grandsons.