For many soldiers and Marines, war is not fundamentally about the mission. War is not really about the enemy. It's not even about patriotism. War is about the man to the left and right of you. War is about your buddy. And it's that camaraderie, that esprit de corps that is the glue that holds the U.S. military together. In this hour of To the Best of Our Knowledge – a talk with U.S. soldiers and Marines who served in Iraq about Esprit de Corps.