of intervention, essentials in wars of, [21].
of intervention, military chances in, [20].
of invasion, when advantageous, [17].
of opinion, [25].
of opinion, character of, [26].
of opinion, instances of, [25].
of opinion, military precepts for, [27].
of position, system of, [135].
of religion, [35].
of sieges, [146].