In 1934, he visited Japan where he attended a conference on the protection of civilians during war and delivered Hitler's birthday greeting to the Emperor. By 1936, he had agreed to be a spy for Hitler, while attending the funeral of George V at Sandringham, for example but he was unreliable, according to a historian, "telling them what they wanted to hear". Hitler also used him to encourage pro-Nazi sentiment among the Duke of Windsor and his wife. Records indicate that Charles Edward received a monthly payment of 4,000 Reichsmark (worth about £16,000 in 2015) from the Führer. Hitler sent Charles Edward to Britain as president of the Anglo-German Friendship Society. His mission was to improve Anglo-German relations and to explore the possibility of a pact between the two countries. He attended the funeral of his first cousin George V as Hitler's representative in the uniform of a Sturmabteilung (SA), complete with a metal helmet; (his British uniforms had been taken away when he was stripped of his British titles). The Prince sent Hitler encouraging reports about the strength of pro-German sentiment among the British aristocracy and about the possibility of a Britain-Germany pact. After the Abdication Crisis, he played host to the Duke and Duchess of Windsor, the former King-Emperor and his wife, during their private tour of Germany in 1937.