We must also look at how wars are financed, and they are financed inexorably, by the violent expropriation (State intervention), of your property, which in essence, creates conflict. Conflict only arises out of a violation of your liberty.
In the absence of interventionism, peaceful arbitration methods will be sought to resolve conflict, precisely because peaceful arbitration is far less expensive than fighting wars.
Essentially, the State creates antagonistic class conflict, whenever and where-ever the Negative-sum game is instituted. Since trade, necessarily implies benefits to both parties, and trade is by nature, voluntary, the voluntary order is therefore peaceful, and as conflict free as nature allows considering we live in a world of scarce resources. The only two ways to act (economically) with another person, is either through trade, or through theft. The State acts only through theft. Theft or expropriation by nature gives rise to conflict. The market-place, only acts through trade. One can deduce logically that a world in which the State was abolished, and Free-trade, and Free-Markets reigned would bring in an age of peace. Where instead of turning to war to resolve conflict, we would instead turn to peaceful arbitration (like we do in all market activity).