In 1918 HIAS sent a representative, Samuel Mason, on a mission to Japan, Manchuria and Vladivostok on behalf of thousands of European immigrants stranded in the Far East by the World War and the Russian Revolution. He established HIAS offices and international post offices and succeeded in helping both Jews and non-Jews on their journeys to new homes in the USA and other countries. He also established The Central Information Bureau for Jewish War Sufferers in the Far East which worked with HIAS to help Jewish refugees in Shanghai through the end of World War II.