In the second phase of attacks, shipping, coastal airfields, radar and stations south of London were attacked during 8–18 August. The "Luftwaffe" gradually increased the frequency of attacks. German bombers also raided 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".