The following statement is true:
The more warfare a nation wages, the more violence it directs against its own people.
Because wars require public funding, the State must violently attack and enslave the public through the tax system, debt, or debasement of the currency.
Thus, the more war that is waged to “save the public from outside oppressors” the more the public voluntarily oppresses itself.
From this we can conclude that the only logical warfare that can be waged is when the outside oppression is a larger threat to economic freedom than the operational cost of war funding.