He Subdues the Saxons and Bavarians
With the Saxon confederation, formed by various pagan tribes on the Weser and the Elbe (the same tribes from among which the Saxons and Angles, who conquered Britain three centuries before this, had gone forth), Charlemagne had the greatest trouble. He repeatedly marched into their country and subdued them; but they constantly rose up again, and it was only after some terrible acts of vengeance,—for example, he one day had forty-two hundred prisoners hanged,—that they at length submitted to be baptized and to become peaceable subjects.
Soon after this the Bavarians attempted to render themselves independent of the Frankish power by the assistance of the Avars, a Tartar race living in what we now call Hungary (then Pannonia). Charlemagne overpowered the Bavarians, incorporating Bavaria with his German territory; and then revenged himself on the Avars by conquering them, taking their treasures, and annexing Hungary to his dominion.