I've been browsing this place for a couple days off/on for a while -- couldn't particularly solve anything because I just don't really have the experience (plus I don't really know any of the cipher stuff), but I decided to try my hand at making a riddle anyway! Apologies for messing up the format / tagging if I do. I'm sure you nice people will get it fairly easily, though.
I stand at the front of my formation, pointing at the enemy.
What sounds like a boulder rushes towards me, but I stay strong.
Even when I get knocked back, I rise again.
The enemy struck hard, but resilient I am,
standing tall and enduring this,
hoping that next time they'll spare me.
What am I?