little impression on the bombers. Three JG 51 Bf 109s were shot down in skirmishes with RAF fighters. RAF Bomber Command also took part in the day's fighting. Although Charles Portal—AOC (Air Officer Commanding)—had protested against the pointlessness of attacking airfields in Scandinavia, the Air Ministry insisted on such raids. No. 82 Squadron RAF sent 12 Bristol Blenheims to bomb KG 30 airfields at Aalborg, Denmark. One pilot turned back complaining of "fuel problems" and was court-martialled. That bomber was the only one to return. The rest fell to AAA fire and fighters. Some 24 airmen were killed and nine were captured. Night raids As darkness fell at the close of Adlertag, Sperrle sent nine Kampfgruppe 100 (Bombing Group 100) He 111s to conduct a strategic bombing raid against the Supermarine Spitfire factory at Castle Bromwich, Birmingham. Despite the group being a specialist night strike unit which had high expertise in night navigation, only four of the crews found their targets. The eleven bombs dropped were not sufficient to disrupt fighter production. Around five of the 11 fell inside the compound. Casualties were small as workers had gone to shelter. Serious damage was done only to offices and a tool room, while a gas main was fractured. Another group, led by Gruppenkommandeur Hauptmann (Captain) Friedrich Achenbrenner, dispatched 15 He 111s from bases in Brittany across the Irish Sea to strike at the Short Brothers factory at Queen's Island, Belfast Northern Ireland. Five Short Stirling aircraft were destroyed. KG 27 also took part in the missions, and bombed Glasgow during the night although their specific target is unclear. Other bombers, commencing the night stage of Adlertag, resolutely flew the length and breadth of Great Britain, bombing Bristol, Cardiff, Swansea, Liverpool, Sheffield, Norwich, Edinburgh and Aberdeen. Very little damage was done, though some rail tracks were cut temporarily and around 100 casualties were suffered. It is unknown if any German aircraft were lost. One German airman was found wandering around the countryside in Balcombe, West Sussex. No other traces of the aircraft or other crew members were found. Aftermath Effect of raids The Germans had maintained the attacks on airfields in south-eastern England which they had started the previous day. On 12 August, most of the Kentish airfields had been attacked; and on 13 August, the Germans concentrated on the second line airfields south of London. The concentration on Detling and Eastchurch