 One of its most successful periods followed during the Second World War when personnel of the Durham University Air Squadron were posted in the castle , doing short courses before joining the Royal Air Force . Those from the college who died during World War II were commemorated by the redevelopment of the Norman Gallery area of the Castle in the 1950s . This period also saw the launch of Castellum , an annual journal of the Castle Society , created to keep former students in touch with college life . In order to continue this expansion , the college purchased Lumley Castle in 1946 to house students , and by 1948 seventy five students were housed there . This section of the college developed a spirit of its own and is still remembered today through activities such as the Lumley Run . 
