Gertsch joined the Army from Buffalo, New York in 1965,[2] and by July 15, 1969, was serving as a staff sergeant in Company E, 1st Battalion, 327th Infantry Regiment, 101st Airborne Division.

He then assumed command of the heavily engaged platoon and led his men in a fierce counterattack that forced the enemy to withdraw.

While moving under fire and encouraging his men he sighted an aidman treating a wounded officer from an adjacent unit.

Gertsch's courage, ability to inspire others, and profound concern for the welfare of his men, the loss of life among his fellow soldiers would have been significantly greater.

His conspicuous gallantry, extraordinary heroism, and intrepidity at the cost of his life, above and beyond the call of duty, are in the highest traditions of the U.S. Army and reflect great credit on him and the Armed Forces of his country.