80 Years Ago—October 21, 1939: President Roosevelt establishes an advisory committee on the use of uranium, under Lyman Briggs.
First British cabinet meeting is held in the underground Cabinet War Rooms (now called the Churchill War Rooms).
75 Years Ago—Oct. 21, 1944: US First Army takes Aachen, the first major German city to fall to the Allies.
Lt. Frances Slanger is killed by a German shell in her tent, the first American nurse killed in France.