Survey of Wartime features co-ordinated by CBA, carried out by local volunteers - most by D and M Sibley but also some others (see sources on records). See DoB Database. The Defence of Britain Project ran from April 1995 to March 2002 under the auspices of the Council for British Archaeology. In that time, nearly 20,000 twentieth century military sites in the United Kingdom were recorded by 600 volunteers. The two databases developed by the Project can be searched on-line through the Archaeology Data Service at: http://ads.ahds.ac.uk/catalogue/resources See E6175 for Historical Research.