targets as far north as Liverpool during night hours. The first major raid inland and against RAF airfields came on 12 August. RAF Hawkinge, Lympne, Manston and radar stations at Pevensey, Rye and Dover were to be destroyed. Portsmouth docks were also targeted. The results of the raids were mixed. The Radar station at Ventnor was badly damaged and others targeted were also damaged, but not destroyed. All were in working order by the following morning. The attacks against the harbour and RAF stations had failed to destroy them. All were not in fully working order by the end of the day, but were back in action the following morning. Unknown to German intelligence, Lympne itself was not even an operational station. This sort of intelligence blunder contributed to the failure of Adlertag. The Germans had not achieved a degree of success commensurate with their exertions. Nevertheless, in the belief they were having considerable effect on Fighter Command, they prepared to launch their all-out assault on the RAF the following day. By 12 August, German air strength had reached acceptable levels. After bringing its serviceable rates up, the Luftwaffe began Adlertag with 71 percent of its bomber force, 85 percent of its Bf 109 units, and 83 percent of its Bf 110 units operational. Luftwaffe preparations Intelligence Faulty intelligence was the component that was mostly responsible for the failure of Adlertag. While the gap between the British and Germans was not yet wide in this regard, the British were starting to gain a decisive lead in intelligence. The breaking of the Enigma machine and poor Luftwaffe signals discipline allowed the British easy access to German communications traffic. The impact of Ultra on the Battle of Britain is a matter of dispute, with Official Histories claiming there was no direct impact. Whatever the truth, Ultra, and the Y service in particular, gave the British an increasingly accurate picture of German order of battle deployments. Joseph "Beppo" Schmid was commander of the Luftwaffe's Military Intelligence Branch (Abteilung 5 as Chief IC). Throughout this time, Schmid's reports made a series of errors. In July 1940, Schmid grossly overestimated the strengths of the Luftwaffe and underestimated the RAF. The most serious mistakes were made concerning radar, airfield identification, and production sites. Schmid asserted that the number of operational airfields in southern England were severely limited; estimated that the British could produce only 180–330 fighters