Martin and Joan Farebrother are both retired, after working in South East England hospitals; Martin as a general and chest physician and Joan as a senior pharmacist. Martin has always been interested in railway history and contemporary transport policy, and Joan in architecture and industrial archaeology. They have owned a cottage in the Pas-de-Calais dpartement since 1990. Interest in the closed railways in that area led to their first railway book, Tortillards of Artois: The Metre Gauge Railways and Tramways of the Western Pas-de-Calais (Oakwood Press, 2008). During research into this they became interested in the area to the east, which was the First World War Arras Sector of the front line, and since then more generally in First World War railways.