Military organizations are organizations that are responsible for the defense of a nation or state. The most common type of military organization is an army, which is composed of ground forces that are trained to fight on land. ARMIES are typically organized into divisions, regiments, and battalions, and are equipped with weapons and other equipment necessary for combat. Other types of military organizations include navies, air forces, and special forces. All of these organizations work together to protect a nation or state from external threats.