Читать книгу Engineering Hitler's Downfall - Gwilym Roberts - Страница 43

In addition to the numerous secret bunkers built for the Auxiliary Units in the counties deemed to be at risk of invasion (see Chapter 3), there was also a network of bunkers with hidden radio and other communications. Comprising a relatively small number of IN and OUT stations, these would have maintained two-way contact between the Units and higher authorities had the Germans invaded. Comparatively little was known about them until recently, when a station built under a tennis court in Norfolk was accidentally discovered. This was found to include a radio room, aerials on a nearby pine tree, a cast iron pipe (which researchers say may have been used by civilian informants to drop split tennis balls containing secret messages into the bunker), an escape tunnel, and a water tank.

Decoding of enemy signals was said to have shortened the war by two years…