In many cases peace can be achieved only in the Roman way: by victory. As with all military objectives, victory is achieved by any means necessary. Including artillery. Clearly, if the enemy uses artillery and you don't, your chances of victory are greatly reduced.
But the libertarian artillery officer faces a serious moral dilemma. Does artillery violate the natural rights of the target? I would say: the entire purpose of artillery is to violate the natural rights of the target. Clearly, if you could get your hands on the people your artillery is pointed at, and subject them to a full and fair judicial trial for whatever their offenses may be, you would have no need at all for artillery. Since you have no means by which to achieve this, you subject them to a 120-mm shell instead. Hence violating their natural rights - with both blast and shrapnel. When they may have committed no offenses at all. Boom! Hey, man, that hurt.
~ Mencius Moldbug