A fascinating object lesson in this is the career of J. Ogden Armour, who became one of the richest people in America by selling canned food to the Army during WWI; invested in packing plants and canneries as is if that demand would always be there; and lost everything, dying essentially bankrupt.
Lee HurleyIf war means everything is more expenive, why are all the companies making record profits? Seriously. This isn't even subtle in the slightest.