The Victual Brothers were organised as a brotherhood or guild. Their main naval enemy in 1392 was the powerful Hanseatic town of Lübeck, which supported Denmark in the war. Apart from Lübeck, the Hanseatic League initially supported the Victual Brothers. Most of the Hanseatic towns had no desire for a victory for Denmark, with its strategic location for control of the seaways. For several years from 1392, the Victual Brothers were a strong power in the Baltic Sea. They had safe harbours in the cities of Rostock, Ribnitz, Wismar and Stralsund. They soon turned to open piracy and coastal plunder. In 1393 they sacked the town of Bergen for the first time and in 1394 they conquered Malmö. They occupied parts of Frisia and Schleswig. They also plundered Turku, Vyborg, Styresholm, Korsholm and Faxeholm castle at Söderhamn in Hälsingland.