German bombers darkened the skies over London and other industrial centers across England. That is, they would have darkened the skies, save that the skies were already dark, for the Germans had failed during the Battle of Britain to achieve air supremacy over the Royal Air Force, and now Nazi strategists shifted to night bombing in an effort to conserve their aircraft. And thus did the Blitz begin, inaugurating 76 nights of intensive bombing in a time that Winston Churchill called “the darkest hour” of World War II.
