159021 passes the Second World War pillboxes at Potbridge on 3 February 2007 as it heads west with the 12:50 Waterloo to Salisbury South West Trains service. This was obviously a key point in the defence of the country during the war, as not only are there abundant pillboxes (there is another in the field on the left), but there are several 'dragons teeth' tank traps next to the road.