International Committee of the Red Cross camps, organizing relief assistance for civilian populations, and administering the exchange of messages regarding prisoners and missing persons. By the end of the war, 179 delegates had conducted 12,750 visits to POW camps in 41 countries. The Central Information Agency on Prisoners-of-War ("Zentralauskunftsstelle für Kriegsgefangene") had a staff of 3,000, the card index tracking prisoners contained 45 million cards, and 120 million messages were exchanged by the Agency. One major obstacle was that the Nazi-controlled German Red Cross refused to cooperate with the Geneva statutes including blatant violations such as the deportation of Jews from Germany and the mass murders
Thai Red Cross Society Plien acted as the society secretary. The society's name was later changed to the Siam Red Cross Society and, following the renaming of the country, the Thai Red Cross Society. The society was officially recognized by the International Committee of the Red Cross on 27 May 1920, and membership in the International Federation of Red Cross and Red Crescent Societies (then the League of Red Cross Societies) was granted on 8 April 1921. Following the statutes of the International Red Cross and Red Crescent Movement, the Thai Red Cross Society provides humanitarian aid and relief services in times of war