Knight Knights were the highest class of fighting men in Europe during the Middle Ages.There were other classes of fighting men,such as the lowly foot soldiers.But knights,who fought on horseback,were the aristocrats someone whose family has a high social rank of the battlefield.The great heroes of the time,both in story and in fact,were knights. Knight Knights were the highest class of fighting men in Europe during the Middle Ages. There were other classes of fighting men, such as the lowly foot soldiers. But knights, who fought on horseback, were the aristocrats ( someone whose family has a high social rank ) of the battlefield. The great heroes of the time, both in story and in fact, were knights