An action-packed breeze of a read. Some wacky ideas a little poorly executed. The prose is pragmatic and confusing at times, as Weeks doesn't differentiate between regular text, thoughts and dialogue, whatsoever. The appearance of howitzers really annoys me, not the guns themselves, but the fact that he hasn't been able to come up with a better term for them, that fits the setting better.
Also, the whole drafting/Chromeria-business sounds a little silly, if you ask me.