80 Years Ago—May 20, 1940: German army reaches the English Channel at Abbeville, France, splitting Allied forces in two and isolating 16 French & 9 British divisions in Belgium.
In the US, the Committee to Defend America by Aiding the Allies (the White Committee) is formed by interventionist journalist William A. White.
75 Years Ago—May 20, 1945: On Okinawa, US Tenth Army takes Chocolate Drop and Flattop Hills; Marines take Wana Ridge.
Japanese troops begin evacuating China to defend Japan.