Memorandum Regarding the Enlistment of Navajo Indians Background Maintaining secrecy, particularly during wartime, is vital to the national security of every country. Accomplishing this on the homefront during World War II was one objective of the Office of War Information. The office created propaganda posters that alerted American citizens to the presence of enemy spies and saboteurs lurking just below the surface of American society. On the battlefield, maintaining military secrecy went far b