Iraq and Vietnam

What have both of these wars proven? In most previous wars, you had militaries fighting militaries. In WWII, when the militaries of Germany and Japan surrendered, so did the people. The people weren't committed to continue fighting. In Vietnam and Iraq you have a military fighting an entire country, military, civilians and all. These countries have people willing to keep fighting even after their militaries have been destroyed. Therefore I don't see how a victory in either of these places that would look anything like the neat and tidy victories of WWII is possible.