the shots on the right hit nothing but cave wall, the goblins having already ducked back around the corner and going further into the caves. The ones on the left make use of their cover, avoiding most of the shots and returning fire, felling a few men. Eloth takes a good look at the cage and the goblins in cover and with careful aiming chucks a fireball into a corner, killing a good chunk of goblins, and avoiding hitting the prisoners. He then rushes forward shouting.
They got cover, and we don't-so we are at a big disadvantage in a ranged fire fight, so we should instead rush them while their reloading and kill them in melee. I can't blast them anymore without risking hitting the prisoners.