https://en.wikipedia.org/wiki/Wyke_Regis_Training_Area The bridging camp was established at the Fleet narrows of Chesil Beach on 1 May 1928, losses of equipment through storms at annual bridging camps up to 1927 at Mudeford, near Christchurch. In the following years the camp was erected by the first unit in and struck by the last unit out. In 1938 the site was used by the Militia, and it continued as a training area during the Second World War, which included a period of use by the RAF as a base for some of their 'Dambusters' trials for the Bouncing bomb.[6] https://en.wikipedia.org/wiki/Bouncing_bomb