The Teutonic Knights' War on PiratesIn 1398, the Teutonic Knights sailed to the island of Gotland to rid the Baltic of the scourge of piracy: a brotherhood of sea thieves called the Victual Brothers (Vitalian Brethren). Embroiled in the regional disputes between Queen Margaret of Denmark and her rivals, the Teutonic Order were forced to act swiftly against the castles and harbors of the pirates. This is the 1398 knights vs. pirates war.
https://www.youtube.com/watch?v=MDRcBH_8wYU