I agree with Zelda: it is pretty good, but it needs to be fleshed out a bit. The fast pace of the story is probably intended to make clear the frantic pace of the battle, but you can add some more detail without losing that.

You could also work a bit on the confusion of the battle. "Who's firing?" is good, I'd like to see that more often. In historical battles the generals were quite often at a loss to understand what's going on, let alone the soldiers!

But is very good. One question though: why is the story called Georgetown?