Maugham returned to Britain from his ambulance unit duties in order to promote "Of Human Bondage". With that completed, he was eager to assist the war effort again. As he was unable to return to his ambulance unit, Syrie arranged for him to be introduced to a high-ranking intelligence officer known as "R"; he was recruited by John Wallinger. In September 1915, Maugham began work in Switzerland, as one of the network of British agents who operated against the Berlin Committee, whose members included Virendranath Chattopadhyay, an Indian revolutionary trying to resist colonial Britain's rule of India. Maugham lived in Switzerland as a writer.