DeFranzo joined the Army from his birthplace of Saugus, Massachusetts, in November 1940,[1] and by June 10, 1944, was serving as a staff sergeant in the 1st Infantry Division.

Despite his own injuries, he led an attack on the enemy positions and continued to advance and encourage his men even after being hit several more times.

[2] Staff Sergeant DeFranzo's official Medal of Honor citation reads: For conspicuous gallantry and intrepidity at the risk of his life, above and beyond the call of duty, on June 10, 1944, near Vaubadon, France.

In a final gesture of indomitable courage, he threw several grenades at the enemy machinegun position and completely destroyed the gun.

DeFranzo lost his life, but by bearing the brunt of the enemy fire in leading the attack, he prevented a delay in the assault which would have been of considerable benefit to the foe, and he made possible his company's advance with a minimum of casualties.