Although the weather was fine, the German Luftwaffe did not start its offensive against RAF airfields, instead mounting a carefully prepared feint. Starting at 0730 hours, Bf 109 and Bf 110 fighters bombed and strafed Dover Harbor in southern England, United Kingdom as a prelude to a larger attack on Portland Naval base and Weymouth, aiming to draw RAF fighters. Spitfire fighters of No. 64 and No. 74 Squadrons responded, but most RAF units remain on the ground per Keith Park's strategy of sending up only enough fighters to counter the German attack and withholding the remaining in reserve. As a larger formation consisted of 56 Ju 88 bombers and 20 He 111 bombers arrived with 97 Bf 110 fighters in escort was detected in the direction of Cherbourg, France at 0945 hours, there were enough British fighters to counter that attack; the ensuing battle caused 20 British Hurricane fighters, 5 British Spitfire fighters, 27 German bombers, and 10 German Bf 110 fighters to become destroyed. The day's German bombing damaged 4 British destroyers: HMS Windsor in the Thames Estuary, HMS Esk at Harwich, and HMS Scimitar and HMS Skate in Portland Harbor.
