 Conversely, William Colepaugh, an American traitor, was recruited as an agent by the Germans while his ship was in port in Lisbon – he was subsequently landed by U-boat in Maine before being captured.In 1941 John Beevor, the head of Special Operations Executive (SOE) in Lisbon, established an underground network with the aim of carrying out sabotage tasks in the event of a German and/or Spanish invasion of Portugal.The targets for immediate destruction were oil refineries, railroads, bridges and industrial and mining facilities.