"There was artillery on the tank and the shell hit the great big tree on the opposite side of me and I was on a dead run until I came to my senses," he said.
"I go back to the trench and my foot started hurting and I took my boot off and there was a spot of blood on my sock. I won't tell you what I said," he said.
Leather didn't call for a medic, but a fellow soldier told him to go back to battalion aid.
"By the time I got back there, I was using the rifle as a crutch. I was figuring on getting patched up and going back to my unit, but that didn't happen," he said.
It was just a small piece of shrapnel, but it had entered the side of his foot and lodged in the middle of a batch of nerves and tendons, he said.