7. John had to ask for help from Otto, who defeated Berengar in exchange for being named Holy Roman Emperor
Otto the Great had already proved himself a formidable warrior long before Berengar made an unwelcome incursion into his life in the 950s. He successfully conquered Bohemia, beat France in battle, and generally expanded his mighty kingdom. Rescuing Adelaide and marrying her made Berengar his vassal, which the latter greatly resented. Thus John’s appeal for help from Otto was tantamount to telling a teacher on a naughty boy. But Otto wasn’t going to waste time he could be spending on conquering other nations on the snotty young Pope for nothing: he first demanded to be made Holy Roman Emperor.
John had no choice but to agree. On February 2 962, Otto became the first Holy Roman Emperor in over 25 years, and made John sign a treaty limiting his Papal power. Many of John’s subjects, resentful about Germany’s part in ending the original Roman Empire in the 5th century, were unhappy to see yet another German become Holy Roman Emperor, but John didn’t care. Otto fulfilled his side of the bargain by soundly defeating Berengar in battle, many of whose troops abandoned their king in fear of the German giant they remembered from the 950s.