Didcot's junction of the routes to London, Bristol, Oxford and to Southampton via the Didcot, Newbury and Southampton Railway (DN&S) made the town militarily important, especially during the First World War campaign on the Western Front and the Second World War preparations for D-Day. The DN&S line has since closed, and the large Army and Royal Air Force ordnance depots have disappeared beneath the power station and Milton Park Business Park; however the 11 Explosive Ordnance Disposal and Search Regiment RLC is still based at the Vauxhall Barracks in the town.