Has anyone ever calculated if there even is a profit to war? Do expensive weapons really sell in war situations? And I don't mean hand-waving. I mean hard fac

Has anyone ever calculated if there even is a profit to war? Do expensive weapons really sell in war situations? And I don't mean hand-waving. I mean hard facts. When are the dollars spent, and who gets them? Does war-time inflation eat up the profits? Also I don't buy the oil-grabbing argument any more. Even Iraq is producing for the market price. Even new deals on investments can't really be counted as free oil...