Joined by the corvette ARA "Guerrico", on 3 April the "Bahía Paraiso" attacked the platoon of 22 Royal Marines deployed at Grytviken. The two-hour battle resulted in the "Guerrico" being damaged and an Argentine helicopter shot down. The Argentine forces sustained three men killed and a number of wounded, with one wounded on the British side. The British commanding officer Lieutenant Keith Mills was awarded a Distinguished Service Cross for the defence of South Georgia. While the British Magistrate and other civilians and military present in Grytviken were removed from South Georgia, another 15 Britons remained beyond Argentine reach. The losses suffered at Grytviken prevented Argentina from occupying the rest of the island, with Bird Island base, and field camps at Schlieper Bay, Lyell Glacier and St. Andrews Bay remaining under British control.