Example image of eyePlorer eyePlorer map for 'Office of Strategic Services': Intelligence agency United States World War II Central Intelligence Agency Secret Intelligence Service Special Operations Executive United States Department of State United States Department of the Navy United States Department of the Treasury United States Department of War OP-20-G Signals Intelligence Service United States Army United States Navy Black Chamber Henry L. Stimson Herbert Yardley United States Secretary of State Franklin D. Roosevelt William Joseph Donovan William Stephenson Joint Chiefs of Staff Federal Bureau of Investigation Latin America China Burma India Theater of World War II Kachin Axis powers China French Indochina Mao Zedong Military occupation People's Liberation Army Resistance movement Viet Minh Fritz Kolbe Finland Arlington Hall Edward Stettinius, Jr. Encryption Venona project 1945 Executive order Harry S. Truman October 1 Pacific Theater of Operations September 20 IRIS Counter-intelligence Secret Intelligence Branch Strategic Services Unit