Despite news of those actions and indications from other sources, the Norwegians were still caught largely unprepared for the attack early the next day. The invasion proper began with German landings of troops in the main Norwegian settlements of Stavanger, Oslo, Trondheim, Narvik and Bergen. The same day (9 April), "Icarus" sank the "Europa", another German iron ore carrier that was being used to transport men and equipment to Norway, and the 2nd Destroyer Flotilla, which had taken part in the mining of the Vestfjord, later fought with other British naval units in the 1st Battle of Narvik, sinking several German warships.