30 September 1940: The Battle of Britain continued

On 30 September 1940, the Battle of Britain was still being fought. That day the Luftwaffe flew some of the last large daylight bomber raids of the battle, against London and the Westland works at Yeovil, and lost 47 aircraft to the RAF's 20. The campaign had begun on 10 July and would run until 31 October. The date fell between the opening attack and the eventual end, with the Luftwaffe and British air defences still contesting control of the skies.

The shape of the campaign had shifted three weeks earlier. On 7 September, the Luftwaffe moved its attention from British airfields and aircraft factories to London and other major cities. The raids followed British bombing of Berlin. The shift was intended as a response, but it gave RAF Fighter Command time to regroup. The account of the change called it a mistake; the practical consequence was a pause in pressure on the targets Fighter Command had been defending.

That made the air campaign more than a contest over where bombs fell. Airfields and aircraft factories had been targets because they supported Britain’s ability to resist. Raids on cities brought the war directly to London and other urban centres, but the change in target also gave the RAF’s fighter organisation room to recover. On 30 September, those two facts sat together: the cities remained under attack, while the force expected to oppose the Luftwaffe had gained time to reorganise.

The calendar date did not mark the beginning or end of the Battle of Britain. It landed in the long interval between them, after the Luftwaffe’s change of emphasis and before the campaign’s recorded close a month later. That interval mattered in a plain operational sense. The German air offensive had not stopped, but its concentration had moved away from the airfields and factories that had been its earlier targets. RAF Fighter Command had time to regroup rather than face the same pressure without interruption.

The campaign’s later reputation could make its outline seem inevitable. The dates did not. On 30 September, the air war was still in progress, the Luftwaffe was striking cities, and Fighter Command had been given time to recover. The result of that change had not yet been settled by the calendar. For the day’s story, that was enough: an attack intended to answer British raids had also eased pressure on the British fighters it was meant to overcome.