Military spending only has the illusion of being economically productive, for the most part. If the government spent the exact same amount contracting with private industries for things that actually get used in the economy, the boost would be tremendous. The products of the military contractors are ships, bombs, planes, computer systems, ammunition etc. that go out of the economy -- they mostly aren't resold or used to create anything else.
Originally Posted by WES445
So yeah, getting rid of a lot of military spending and replacing it with nothing would be bad for the economy. Replacing some of it a fraction at a time with road building, green energy contracting, and infrastructure projects would be incredibly good for the economy. All that productive capacity would then be dedicated to producing goods and services that are economically beneficial down the line in a way that military spending is not.
"As long as the problems of the poor are not radically resolved by rejecting the absolute autonomy of markets and financial speculation and by attacking the structural causes of inequality, no solution will be found for the world's problems or, for that matter, to any problems." -- Pope Francis