Applying scientific logic to the known facts to restore King Arthur to his true place in English history, this book starts with what is known of his life, and progresses through logic, commonsense and scientific probability. It provides analysis of his battle campaigns, and his role as author of "The King's English". It is claimed that the English language as spoken today is due mainly to the effectiveness of King Arthur's military tenacity. The author attempts to establish a place in history for Arthur from the known facts.