Dr Stephen Bull is Curator of Military History and Archaeology for Lancashire Museums, with particular responsibility for local regimental collections. Currently he is engaged in the redisplay of the Museum of Lancashire, including a new gallery on World War I. He has previously worked at the National Army Museum and BBC in London. A Member of the Institute of Archaeologists, he has also appeared in the TV series Battlefield Detectives. He has written numerous articles for specialist journals, including a number on the weapons and tactics of the two world wars. His most recent publication was in collaboration with the Imperial War Museum entitled Trench: A History of Trench Warfare on the Western Front (Osprey 2010).