Last Updated: Feb 21, 2017     Views: 22

The first organized army was in Mesopotamia (modern day Iraq) starting in 3500 BC - see Chapter 2.

Citation: Richard A. Gabriel and Karen S. Metz. A Short History of War: The Evolution of Warfare and Weapons (Carlisle Barracks, PA: U.S. Army War College, Strategic Studies Institute, 1992)

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