Just to further back up your point when you look at the cost of US wars here: http://imgs.xkcd.com/comics/money_huge.png http://imgs.xkcd.com/comics/money_huge.

Just to further back up your point when you look at the cost of US wars here: http://imgs.xkcd.com/comics/money_huge.png http://imgs.xkcd.com/comics/money_huge.png WW2 is head and shoulders above everything else.