I think it's fairly well understood that Hitler's economic advisors were familiar with The General Theory, though they probably would've built up the military, regardless.  (And I'm amazed Rothbard and Rand didn't attempt to blame Keynes for the rise of Hitler.)  That's obviously not to say that we should blow money on the military everytime we have a recession.  The far-Right spends too much on it, already, in America.  I'm honestly not big on fiscal policy as a tool to combat recession.

On some level, spending is spending is spending.  But it's clearly more advisable to spend on, say, infrastructure rather than on massive military buildup.

Conservatives want live babies so they can raise them to be dead soldiers. - George Carlin