Dropped

You get up.
Damn! That hurts so much, just getting to your feet. You walk over to the rifle, and pick it up.
Damn, that hurts too!
You have to get over this pain. Once you're back with allied soldiers, you'll have time to relax. But not now, right now you need to get out. You cant give the Germans the satisfaction of capturing you!
You walk over to the back of the tent, and instinctively reach for your knife. But wait! It's still there?
They didn't take the knife when they found you?
You use the knife to slice the tent wall, and sneak away.
As you walk further from the camp, everything stays quiet. Looks like they haven't noticed your absence yet.
Why?