War is one thing that no society should engage themselves into as its effect is devastating and unforgettable upon generations. When two or more countries are warring it is said that there are other countries that benefits in one way or the other from the war as it prolongs and intensifies, especially economical benefits is one of such.
War is one way to reduce a whole civilisation back to its stone age. It usually that damaging as in a matter of days or weeks, years of work would be reduced to rumbles.
In a war, no one really gets to benefit if we look at it grossly. Everyone loses eventually. Nations gets to lose there economic power and the wealth of there armory is diminished hence, there would be a need to visit the treasury.
Then, there are those that becomes opportunist and that is those that control the food. Eventually, the way of life of a people and means of livelihood is rendered useless and man must eat no matter what. Having food and being able to secure as well as get it out to the needing masses would make you an important figure.