This loops incrediblly well Diabolo-ical, and the sounds are pretty realistic, but I would recommend getting some better samples for your strings. I feel if the strings were upped in quality, the power of this song would be much more powerful.
Some ideas that come to mind. Bells. I think bells are a must have to any battle scene. Bells of damnation, of corruption, and desctruction! EVERYTHING MUST DIE :O!
Sorry. Got carried away.
Anyways, the timpini work is impressive, a bit loud in my opinion, and I think you should reverb them a bit more, and lower their volumes a tad so that its more a thumping, then a whamming sound if you know what I mean.
Other then that, pretty damn fine. 5/5 from me Diabolo-ical. I have a war theme up as well, i'd like you to listen to it some time ^^.