69 A.D.: The Year of Four Emperors - Gwyn Morgan - Google Books

http://books.google.de/books?id=izOWDXO2TooC

The Year of Four Emperors, so the ancient sources assure us, was one of the most chaotic, violent, and frightening periods in all Roman history. It was a time of assassinations and civil war, of armies so out of control that they had no qualms about…