 <unk> , trained and equipped by the Germans , the <unk> sank the armed trawler <unk> Erin , and destroyed the auxiliary minesweeper <unk> <unk> , which resulted in the deaths of six British <unk> on 18 January 1942 . <unk> was assisted by the Spanish naval commander of <unk> <unk> , Manuel Romero Hume , who allowed him to beach a <unk> there . The British intelligence was able however to counteract the sabotage operations . In March 1942 , a <unk> , José Key , one of the most prominent agents working for the Germans , responsible for the collection of information on military movements for the <unk> was arrested and executed in <unk> Prison in late 1942 . By September 1942 , <unk> , whose activities were closely monitored by the British at that time , resigned and left Carlos <unk> , his second in command , in charge of the operations . In late 1942 , the German headquarters in Berlin ordered the sabotage operations being expanded . In early 1943 , the arrival of an experienced head of <unk> operations in Spain improved the outreach of the operations . 
