President Franklin Delano Roosevelt was the president during World War 2 until he died near the end of the war. Vice-President Harry S Truman succeeded to the Presidency and held office when Japan surrendered to end WW 2 on August 15, 1945.
Franklin Delano Roosevelt
During World War I and II the US army maintained a unit whose task was the training and use of what, for communication and reconnaissance purposes?
During World War II the US and UK armies used bodies of, respectively, over 54,000 and 250,000 what, as part of their communication and/or delivery systems?