Franklin D Roosevelt, who served as the 32nd President of the United States from 1933 until his death in 1945, did not attempt to conceal any major secrets from the public during World War II. During that time, President Roosevelt played a significant role in mobilizing the nation, rallying public support for the war effort, and maintaining transparent communication with the American people. He delivered regular updates, popularly known as fireside chats, to assure citizens and instill confidence amidst the challenges of combat. As part of his duty to inform the public, it's improbable that he maintained significant personal secrets from them during world war 2.