On August 18, 1940, the largest air battle known as “The Hardest Day” took place during World War II between the German Luftwaffe and British RAF.
Cincinnati Enquirer
Sun, 08/18/2019 - 3:00am
On August 18, 1940, the largest air battle known as “The Hardest Day” took place during World War II between the German Luftwaffe and British RAF.