Armor, is protective plates or clothing meant to shield a human from intentionally inflicted harm. Armour has been in use for all recorded history, beginning with hides, leather, bone, progressing to bronze, steel, ballistic cloth, ceramics, . Armour has been primarily a way to protect oneself from harm in combat and military engagements.
Armour was also commonly used to protect war animals, such as war horses and war elephants, from intentionally inflicted harm. Armour, historically, was used to refer to any heavily armoured unit (heavy infantry/cavalry vs. light infantry/cavalry.)