In May 1626 the Swedes entered Polish Ducal Prussia. Escorted by a fleet, a second Swedish army disembarked in July near the town of Piława (Pillau). The landings were a complete surprise to the Commonwealth's defences, and despite a relatively small Swedish force, Gustavus Adolphus quickly captured the coastal towns and cities, almost without a fight. Many of these were inhabited by Protestants who resisted the staunchly Catholic Sigismund and Polish domination of their lands; some towns opened their gates to the Protestant Swedish forces whom they portrayed as liberators. However, fortified Gdańsk (Danzig), which maintained its own standing army and a sizeable fleet, refused to surrender. Simultaneously, Sigismund received little to no support from his vassal George William of Brandenburg-Prussia, who, as a Calvinist, pledged neutrality in the conflict. Jędrzej Moraczewski described George's neutral stance to salvage his dukedom as "comical".