--subdivision Secret service under names of wars, etc., e.g. World War, 1939-1945--Secret service; United States--History--Civil War, 1861-1865--Secret service
--subdivision Collaborationists under individual wars, military occupations and history of a country under foreign rule, e.g. World War, 1939-1945--Collaborationists; Korea--History--Japanese occupation, 1910-1945--Collaborationists