From the Journal of Hrogar

You know what I like about cannons? Pretty much everything. They give you much the same benefits as a wand of lightning bolts, but without the need to be able to cast magic! Admittedly, instead of a wizard it helps to have a gnome around to use it, but under our current circumstances, that's pretty much what the cleric ordered.

The problem with fighting aboleths is that you really don't want to kill their servants, because you know their servants are under mind control. Now mind you, most of the servants we've tended to see strike me as the sorts with a predisposition toward that acts the aboleth is having them commit. That is to say, the aboleth tends not to use direct control of all it's minions so much as it sets up circumstances as needed so that most of the 'minions' are willingly doing what the aboleth wants. That being said, I don't feel right just slaughtering all it's minions. But then, I've always been counseled not to go into battle blindly. As mentioned before, this has caused no small amount of head banging between me and other paladins.

None the less, I believe that the group is suitably restraining itself, killing when it can't be helped, but not becoming an unthinking murderous mob.