Okay... I think I didn't quite understand.
We need to describe a battle from the perspective of a hero (or heroine).
But... the heroes just stand there, either casting spells or shooting (or running around).
Only the regular soldiers are in the thick of the battle.
So... could we make the story from the perspective of a soldier, rather than the hero (who, essentially, doesn't participate in the battle, but only commands the army)?
That would be more interesting.
Here, you have complete freedom of your imagination; write whatever you want, I've only set the general boundaries.
"Истинно могуч тот, кто побеждает самого себя"