"They're not a specifically trained force, but they still fight like hell for their home. I worry that some of the younger ones will get themselves killed being overzealous but considering the situation as a whole, I doubt that's really at the forefront of their concerns anyway." Even if she doubts that dying repeatedly is particularly healthy even for the ones that can just spring back into action after they've revived. They're probably going to start going grey earlier, their knees will start clicking in wet weather, their hips will protest when they stand up... Just as a guess.