As king of the Franks (768-814) Charlemagne (Charles The Great) conquered the Lombard kingdom in Italy, subdued the Saxons, annexed Bavaria to his kingdom, fought campaigns in Spain and Hungary, and, with the exception of the Kingdom of Asturias in Spain, southern Italy and Britain, united in one superstate practically all the Christian lands of western Europe. In 800 he assumed the title emperor and throughout medieval Europe he was considered the prototype of the Christian king and emperor. As a young man Charles repeatedly accompanied his father's army and throughout his life he shared with his father an unbending will to power and a readiness to fight against external enemies to increase his domains.