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
International Committee of the Red Cross is still considered the greatest failure of the ICRC in its history. After November 1943, the ICRC achieved permission to send parcels to concentration camp detainees with known names and locations. Because the notices of receipt for these parcels were often signed by other inmates, the ICRC managed to register the identities of about 105,000 detainees in the concentration camps and delivered about 1.1 million parcels, primarily to the camps Dachau, Buchenwald, Ravensbrück, and Sachsenhausen. Swiss historian Jean-Claude Favez, who conducted an 8-year review of the Red Cross records, says that even though the Red Cross knew by November 1942