This was a cool video!  I liked how you used in camera effcects.  My favorite were the muzzle flashes and the fire after the gernade.  It was smart of you to have a light on the flame as it made it look a lot cooler.

Your animation wasn't bad, but the sets were a bit lacking.  I think it might have been interesting to add some furniture to the building and maybe snow on the rock pieces as you had it on the ground.  The story could have benefited from a short opening explanation to give the story a bit of context.  I am familiar with the battle, but not everyone may be.

Overall, I really liked watching it and hope to catch your next one.