Definition from Urban Dictionary:

Refers to the friendly relationship between those in charge of defending the homeland and the industries that produce the equipment and weapons needed to fight a war. Could be summarized as a ‘war-for-profit’ scheme.
Person 1: …but why on earth would a nation’s leaders be willing to sacrifice human life as an excuse to start a war?

Person 2: Man, haven’t you heard about the military industrial complex?

When most of the government’s money is headed towards war, and more specifically, private contractors such as Blackwater, what are you truly fighting for?