It's one of those things that you just can't quite put a finger on... The ending just doesn't feel right...
I think the whole thing is Jake's fault... He kinda got really messed up in the head, and came up with this complex battle plan that 'worked' in the end, but probably could've been a little more complete and polished, if he weren't a nervous wreck dealing with the lives of the people he cared about the most...
Jake is my favorite character, and I really felt kinda sorry for him throughout the books...
I have a question, though: Why did Rachel have to die? Could she not have lived a normal life after the war? Was she so changed that she really couldn't live without the war, as Jake seems to have believed?
Personally, I believe that she could've adjusted just fine, with help from Tobias and her family... She didn't need the slaughter. I just don't believe that that one part of her became her one need through it all.