On Sunday, September 15, 1940, the decisive engagement of the Battle of Britain took place in the skies over southeast England.

“The Crucible of War: 1939-1945”, the third volume of the official history of the Royal Canadian Air Force, describes how the day unfolded.

“On Sunday, 15 September—the high point of the battle by most accounts . . . the Germans launched an attack on London by 123 bombers, escorted by over 650 fighters.” Read the rest of the article . . .