Today in World War II History—September 11, 1941
Saturday, September 11, 2021 by Sarah Sundin

Franklin D. Roosevelt at the White House, delivering radio address, 11 September 1941. Note his black armband for his mother’s death four days before (US National Archives: 197058)
80 Years Ago—Sept. 11, 1941: Ground-breaking ceremony for the Pentagon is held in Arlington, VA.
In a Fireside Chat radio address, President Roosevelt says US Navy will “shoot on sight” at German or Italian ships in US waters or any attacking US ships or ships under US protection (due to USS Greer incident on Sept. 4, 1941).