This book looks at the medical history of the German Emperor Friedrich III (1831-1888) from the point of view of an ENT-doctor. Especially in the German speaking literature the Englishman Sir Morell Mackenzie is given the guilt of the early death of the monarch. But with knowledge of the original reports of the involved docrors results a more different picture. It must be clearly stated that the medical history presents itself as a sequence of treatment errors, misdiagnoses and trench warfare among the treating physicians.