The Luftwaffe flew few sorties from 9–10 August and Adlerangriff (Operation Eagle Attack) had not occurred.
The events of 11 August 1940 increased the ferocity and tempo of German air operations now that a large period of clear and fine weather was predicted.
The day's operation amounted to a coordinated attack on No.
10, 11 and 12 Groups coupled with naval interdiction activity in the Channel.
Kesselring hoped to draw out and disperse Park's defences by sending out large numbers of single Staffeln.
With the exception of the early morning, Park did not take the bait.
While a high proportion of No.
11 Group aircraft were forced into the air it did not achieve Kesselring's aim of attracting enforcements from other RAF Groups.

In the morning Hauptmann Walter Rubensdörffer led Erprobungsgruppe 210 and 17 Bf 110s on a strafing attack on Dover.
Covered by a flight of Bf 109s the escort dispatched three barrage balloons from No.
961 Balloon Squadron.
The Bf 110s released light bombs but did little damage.
Park reacted by committing 74 Squadron (Adolph "Sailor" Malan).
The unit ran into three Staffeln of Bf 109s from JG 51.
The closing speed was so fast a fleeting firing pass was made by opposing the fighters which resulted in one British pilot ditching in the sea, later to be rescued and Hurricanes of 32 Squadron tried to engage the Bf 109s.
 I./JG 2 and 64 Squadron met and two Bf 109s were shot down, one pilot was wounded and the other killed.

Park soon identified the naval base at Portland as the Germans' main objective for the day.
Radar detected a large build-up over the Cherbourg peninsula.
He ordered No.
609 and No.
1 Squadron up from Warmwell and Tangmere.
Six other units from Middle Wallop and Exeter, Tangmere and Warmwell were ordered to readiness.
Some 53 fighters were now involved.
The enemy approached in strength in the late morning.
Around 54 Ju 88s from I., and II./KG 54 were supported by 20 He 111s from KG 27.
I., and II./ZG 2 provided 61 Bf 110s as escort which were reinforced by 30 Bf 109s from III./JG 2 under the command of Erich Mix.
JG 27 provided withdrawal cover.
It was the largest raid yet sent against a British target.
Within a minute from 10:04, 145, 152, 87, 213 and 238 Squadrons were scrambled to support the two airborne Squadrons.

The Bf 109s and Bf 110s arrived ahead of the bombers.
609 Squadron attacked, the flight containing future ace John Dundas.
The battle commenced at 23,000 ft (7,000 m).
Squadron leader Horace Darley led the Spitfires onto the flank of the enemy Bf 110s and fired full-deflection shots which enabled his pilots to avoid the powerful frontal guns of the German heavy fighters.
The attack shot down five of the Bf 110s.
Among the dead was Gruppenkommodore Major Ott, shot down by Noel Agazarian.
Most of the British units fell for the trap, and became engaged with the escort with only four 152 Spitfires spotting the bombers as they headed for Portland and Weymouth.
The He 111s bombed from 15,000 ft (4,600 m) while the Ju 88s dropped to 10,000 ft (3,000 m) and hit the oil storage tanks.
The destroyer HMS Esk was damaged at Harwich while HMS Scimitar and Skate were damaged in Portland.
HMS Windsor was damaged off Botany Buoy.
The armed trawler HMT Edwardian was run aground at North Foreland to prevent it sinking.
The trawler Peter Carey was severely damaged and the steamer Kirnwood and tanker Oil Trader were hit.

JG 27 were involved in combat as they covered the raid's withdrawal.
JG 27 lost three of its number to 238 and 145 squadrons but the German fighters destroyed four 238 Hurricanes and killed four pilots while damaging another.
145 suffered two damaged and two destroyed and two pilots killed.
The massive dogfight resulted in the loss of 16 Hurricanes with 13 pilots killed and two wounded.
A 152 Squadron Spitfire was lost and its pilot drowned.
German losses amounted to six Bf 110s, five Ju 88s, one He 111 and six Bf 109s.
The number of aircraft lost over the Channel prompted both sides to send forces out to locate survivors.
Two Blenheims from 604 covered by 152 Squadron Spitfir
The Luftwaffe flew few sorties from 9–10 August and Adlerangriff (Operation Eagle Attack) had not occurred. The events of 11 August 1940 increased the ferocity and tempo of German air operations now that a large period of clear and fine weather was predicted. The day's operation amounted to a coordinated attack on No. 10, 11 and 12 Groups coupled with naval interdiction activity in the Channel. Kesselring hoped to draw out and disperse Park's defences by sending out large numbers of single Staffeln. With the exception of the early morning, Park did not take the bait. While a high proportion of No. 11 Group aircraft were forced into the air it did not achieve Kesselring's aim of attracting enforcements from other RAF Groups.
In the morning Hauptmann Walter Rubensdörffer led Erprobungsgruppe 210 and 17 Bf 110s on a strafing attack on Dover. Covered by a flight of Bf 109s the escort dispatched three barrage balloons from No. 961 Balloon Squadron. The Bf 110s released light bombs but did little damage. Park reacted by committing 74 Squadron (Adolph "Sailor" Malan). The unit ran into three Staffeln of Bf 109s from JG 51. The closing speed was so fast a fleeting firing pass was made by opposing the fighters which resulted in one British pilot ditching in the sea, later to be rescued and Hurricanes of 32 Squadron tried to engage the Bf 109s.  I./JG 2 and 64 Squadron met and two Bf 109s were shot down, one pilot was wounded and the other killed.
Park soon identified the naval base at Portland as the Germans' main objective for the day. Radar detected a large build-up over the Cherbourg peninsula. He ordered No. 609 and No. 1 Squadron up from Warmwell and Tangmere. Six other units from Middle Wallop and Exeter, Tangmere and Warmwell were ordered to readiness. Some 53 fighters were now involved. The enemy approached in strength in the late morning. Around 54 Ju 88s from I., and II./KG 54 were supported by 20 He 111s from KG 27. I., and II./ZG 2 provided 61 Bf 110s as escort which were reinforced by 30 Bf 109s from III./JG 2 under the command of Erich Mix. JG 27 provided withdrawal cover. It was the largest raid yet sent against a British target. Within a minute from 10:04, 145, 152, 87, 213 and 238 Squadrons were scrambled to support the two airborne Squadrons.
The Bf 109s and Bf 110s arrived ahead of the bombers. 609 Squadron attacked, the flight containing future ace John Dundas. The battle commenced at 23,000 ft (7,000 m). Squadron leader Horace Darley led the Spitfires onto the flank of the enemy Bf 110s and fired full-deflection shots which enabled his pilots to avoid the powerful frontal guns of the German heavy fighters. The attack shot down five of the Bf 110s. Among the dead was Gruppenkommodore Major Ott, shot down by Noel Agazarian. Most of the British units fell for the trap, and became engaged with the escort with only four 152 Spitfires spotting the bombers as they headed for Portland and Weymouth. The He 111s bombed from 15,000 ft (4,600 m) while the Ju 88s dropped to 10,000 ft (3,000 m) and hit the oil storage tanks. The destroyer HMS Esk was damaged at Harwich while HMS Scimitar and Skate were damaged in Portland. HMS Windsor was damaged off Botany Buoy. The armed trawler HMT Edwardian was run aground at North Foreland to prevent it sinking. The trawler Peter Carey was severely damaged and the steamer Kirnwood and tanker Oil Trader were hit.
JG 27 were involved in combat as they covered the raid's withdrawal. JG 27 lost three of its number to 238 and 145 squadrons but the German fighters destroyed four 238 Hurricanes and killed four pilots while damaging another. 145 suffered two damaged and two destroyed and two pilots killed. The massive dogfight resulted in the loss of 16 Hurricanes with 13 pilots killed and two wounded. A 152 Squadron Spitfire was lost and its pilot drowned. German losses amounted to six Bf 110s, five Ju 88s, one He 111 and six Bf 109s. The number of aircraft lost over the Channel prompted both sides to send forces out to locate survivors. Two Blenheims from 604 covered by 152 Squadron Spitfir
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