Vassals are lords of territories who pledge military support in times of war. France made great use of Vassals in the wars of Charlemagne, and each lord was required to acompany the army with their personal retainers. Since the resources and time to become acustom to riding on horseback was extensive, generaly only lords had the time and resources to do so. This process led to the feudilization of France and other European powers. Other empires used vassals. The thengs of Anglo-Saxon England were vassals and rode on horseback but used horses for transportation, not warfare. The tagmata system of the Byzantines was roughly equivilant to this and in the Arab world, Emirs swore allegiance to Caliphs and Sultans. Craig, could you please send this through spell check? By browzer doeasnt have that option?