The Armies of Islam, 7th-11th Centuries During the Middle Ages, Islam was Christian Europe"s only civilized and most troublesome neighbor. The Middle Ages saw almost continual strife between these two distinct cultures. By the time the Frankish Crusaders reached the Middle East at the end of the 11th century, Islam had already incorporated three major races: Arabs, Persians and Turks, each of which contributed different strengths to the... Full description