Retired Army Lt. Col. George B. Collins, 71, an engineer who served as a bombardier in the Pacific, African and European theaters in World War II, died of cancer Friday at the Woodbine Nursing Home in Alexandria.

He entered the Army in 1939, and spent most of his military service with the infantry. During the war, however, he was detailed to the Army Air Corps, and returned to the infantry after the war.

Col. Collins retired in 1960 after three years with the Army's office of declassification at the Pentagon.

Before that he had been with the Military District of Washington for a year and had been assigned to Germany and France.

Col. Collins was born in Youngstown, Ohio. He was a graduate of Pennsylvania State University, where he received a degree in metallurgical engineering. A quarterback, he captined the Penn State football team in his senior year and then played briefly for the Philadelphia Eagles.

A resident fof the Mount Vernon area of Fairfax County for 24 years, Col. Collins had been an officer of the Strat-ford-on-the-Potomac Civic Association.

Since leaving military service, he had been a technical adviser on a number of building projects in this area. He also was a painter and had exhibited his work locally.

He is survived by his wife, Stephanie, of the home; a son, George C., of Miami, Fla., and three sisters, Delores Cochran, of Hemet, Calif., Irene Schauer, of Parma, Ohio, and Jean Farman, of Saugus, Calif.