This short (22 page) article by T.E. Lawrence (a.k.a. Lawrence of Arabia) was first published in the Army Quarterly in 1920. It is incredibly concise and well written. It contains all of the major analysis and conclusions of Seven Pillars of Wisdom (his book and most famous work) without the narrative of his war experiences. It is the "cliff notes" to Lawrence, written by Lawrence himself. It is essential reading for anyone with an interest in World War I, the Arab world, military history, unconventional, irregular, or guerrilla warfare.