So, in the previous post in this series, I explained why (at least to a proximate cause) in 1914 people around Britain started worrying that German spies had gone around the country building concrete platforms for heavy artillery, as supposedly had been done before the war near Maubeuge and Antwerp. But what I didn't do was explain the concurrent (and in the case of Great Missenden, overlapping) belief that German spies had also gone around building Zeppelin bases, which after all is where I started. This seems especially puzzling since, thanks to their long range, Zeppelins certainly didn't need any such bases to launch air raids on London or elsewhere in Britain; this was well-known and was the basis for the phantom airship panic the year before the war.
What I think was happening here is essentially the same as happened with the Maubeuge platforms: people were reacting to the rapidly developing war situation, particularly the German advance to the Channel coast: Antwerp fell on 10 October 1914, Ostend on 15 October. The next major ports to the west, Dunkirk and Calais, were to remain in Allied hands for the rest of the war, but this couldn't have been known at the time. Already in late August, the Channel ports were being identified as potential forward bases for Zeppelins: 'While [the Royal Marines] hold Ostend there need be no fear of the town being made a Zeppelin base as was suggested a day or two since'.1 The Western Daily Press thought that
it is plainly the object of the enemy to establish themselves on the coast, and to find there more than one point d'appui for delivering attacks on England by means of aeroplanes and Zeppelins. It has been obvious that, during the past few weeks, the Germans have determined to make the fullest use of their aerial flotilla, quite irrespective of the regulations laid down in the second Hague Convention. The performance of a Zeppelin over Antwerp the other day stands in proof of this conviction.2
By 16 September it was being reported as rumoured in Berlin that 'Germany is preparing to invade England with a Zeppelin armada [...] the stories all agree that the base from which they shall start is Calais. As soon as the French army is disposed of, according to the German plan, a strong force will capture Calais'.3 A week later, there was more confidence, with the Aberdeen Daily Journal suggesting that 'If the Germans had succeeded in establishing a Zeppelin base at Dunkirk or Calais, there is no doubt the danger to London would have been real from a panic point of view'.4 The RNAS raid on the Zeppelin sheds at Düsseldorf on 22 September may have allayed fears, although whether it had done any significant damage was not clear, and the very fact of the raid and its daring nature itself proved that the government was taking the Zeppelin threat seriously. In fact it was assumed to be a reprisal for the bombing of Antwerp.5