How did Henry Johnson ward off a German attack of a listening post he was manning, eventually killing four German soldiers?

Shot the German soldiers with his rifle and a machine gun

Used his rifle as a club and also stabbed German soldiers with a knife

Threw hand grenades and poisonous gas canisters at the German soldiers

Henry Johnson ward off a German attack of a listening post when:

Answer = ' Used his rifle as a club and also stabbed German soldiers with a knife'

Basically, he used his rifle as a club, until his stock of bullets ended. He would've stopped fighting but saw German soldiers grabbing his friend, and pulled out his knife to fight until his last breath. After fighting, and killing, some German soldiers with only one blade, the German soldiers left ran back into the night.