Pen & Sword Books is part of The Barnsley Chronicle newspaper group. The Barnsley Chronicle is one of the UK's oldest provincial newspapers and one of the few weeklies still in private ownership. It was launched in 1858 and recently celebrated its 150th anniversary. The first books produced by the company were in response to public demand following of a series of articles first published weekly in the Barnsley Chronicle. Dark Peak Aircraft Wrecks told the story of crash sites in the Dark Peak National Park and a further weekly feature on the history of two Kitchener battalions, known as the the Barnsley Pals, aroused a thirst for more information. Over the years these books have been reprinted a number of times and collectively have reached a figure of around 20,000 copies sold.