Teutonic Knights

On 13 July 1260, the Livonian Order marched roughly 8,000 men and 190 knights to Lake Durbe to punish a Samogitian raid. It lost its own master, its Prussian marshal, and 150 knights in an afternoon, after its own allies walked off the field over a prisoner dispute.

On 5 April 1242, a twenty-year-old Prince of Novgorod halted a crusader advance on the ice of Lake Peipus. Russia never forgot. Most of Western history never noticed.