The Military Impact of the Fortresses and Fortresses on the Banks of the Euphrates in the Crusades between the Muslims and the Crusaders during the Sixth Century AH / Twelfth century AD

Abstract

The study of the history of the Crusades is considered one of the most important historical studies that took a great deal among researchers, but there are still gaps in this field that have not studied fully. Therefore, this research came to shed light on the impact of castles and forts in the area of the Euphrates banks during the time of the Crusades in the sixth century AH / Twelfth A.D., since those castles were the main pillar on which the Islamic-Crusader struggle was based