I agree, except for the time frame. 5 centuries is does not go back nearly enough. Mohamad also was a war lord, from the begining.
Yes, the Battle of Tours, in France, was in 732. Moslems have been attacking the West long before 5 centuries ago!
http://campus.northpark.edu/history/WebChron/WestEurope/Tours.html
"October 10, 732 AD marks the conclusion of the Battle of Tours, arguably one of the most decisive battles in all of history.
"A Moslem army, in a crusading search for land and the end of Christianity, after the conquest of Syria, Egypt, and North Africa, began to invade Western Europe under the leadership of Abd-er Rahman, governor of Spain. Abd-er Rahman led an infantry of 60,000 to 400,000 soldiers across the Western Pyrenees and toward the Loire River, but they were met just outside the city of Tours by Charles Martel, known as the Hammer, and the Frankish Army."