ARMOR is the professional journal of the U.S. Army’s Armor Branch, published by the Chief of Armor at Fort Benning, Georgia, training center for the Army’s tank and cavalry forces (United States Army Armor School). ARMOR magazine is the U.S. Army's oldest professional journal, founded by U.S. Cavalry officers in 1888, and originally titled as The Cavalry Journal.

Armour (spelled armor in the United States of America) is a protective covering that is used to prevent damage from being inflicted to an object, individual, or vehicle by direct contact weapons or projectiles, usually during combat, or from damage caused by a potentially dangerous environment or action (e.g., cycling, construction sites, etc.). Personal armour is used to protect soldiers and war animals. Vehicle armour is used on warships and armoured fighting vehicles.