actually, historically we have seen wars as an economic boom, and the post war as a period of economic recession.
WWII helped end the great depression because demand for steel, nylon, and labor increased, due to intense government investment to make jeeps, uniforms, guns, bullets, etc.... when the war ended they were well aware that the great depression could re-occur, because of the sharp decline in demand. that is why they employed the new deal, and other programs, meant to heavily invest in government funded infrastructure projects, to help absorb the increase in unemployment that happens when companies have to cut capacity, because of decreased demand....