Did Charlemagne believe in excommunication

Yes, Charlemagne recognized the authority of the Church and the significance of excommunication as a tool for maintaining moral and spiritual order. He upheld the power of the Pope to excommunicate individuals, viewing it as a means to enforce discipline within the Christian community. However, he also sought to balance this with his own authority as a ruler, often intervening in church matters to ensure that excommunication did not undermine his political power.