Dr Stephen Bull is currently Curator of Military History and Archaeology for Lancashire Museums. He has previously worked at the National Army Museum, and for the BBC in London. He is the author of more than twenty military and historical titles published in Europe and the US, and he has appeared in the TV series Battlefield Detectives. Among his many publications are An Historical Guide to Arms and Armour, Volunteer! The Lancashire Rifle Volunteers 1859-1885, Brassey's History of Uniforms: World War One British Army, World War I Trench Warfare, Encyclopedia of Military Technology and Innovation, World War II Infantry Tactics, World War II Jungle Warfare Tactics and Commando Tactics: The Second World War.