Holding Professor Henry Jones and Marcus Brody hostage, the soldier ended up fighting the elder Jones who tried to take a gun to free himself. He managed to hold Jones in a chokehold until the soldier's face was squirted by ink shot out from Jones' pen. Blinded by the blast, the soldier was knocked unconscious by Jones.
The soldier managed to come to his senses and saw that Jones and Brody were attempting to flee the tank. The soldier managed to grab Jones and fought him again, even managing to aquire the gun. Holding Jones at gunpoint, the soldier had the upper advantage until he was knocked out again by Brody who bashed him on the head with a tank shell. The man reflexively fired the gun and the richocheting bullet struck the tank driver dead; in the process inadverdently saving the life of the younger Jones who was hanging on for life at the edge of the tank.
The still-unconscious soldier ended up losing his life when the tank plunged off a cliff.