Basic Trope: Defeating the commander results in the army's defeat. * Straight: The Hero kills the Big Bad, and when the army discovers this they surrender. * Exaggerated: The Hero blows up the building containing all high command, and the soldiers in the army drop their weapons on the spot. * Justified: * The army was only fighting out of fear of the commander, not out of loyalty, and were willing to avoid the war in the first place. * Alternatively, the commander had them under mind control, which stopped the moment the commander was killed. * Or they were mercenaries hired by the commander. When their incentive was gone, they had no reason to fight on * Alternatively, the army was made of remote controlled robots/zombies/contructs which without orders go back to