The following publications by Peter Chasseaud about British First World War trench maps, and other aspects of engineer survey (Maps and Printing Sections, Topographical Sections, Field Survey Companies, Field Survey Battalions), artillery survey, aerial photography, topographical intelligence, artillery intelligence (including sound ranging, flash spotting, air photos, etc.), etc., are at present available, several of them from Naval & Military Press.
Topopgraphy of Armaggedon - A British Trench Map Atlas of the Western Front, 1914-1918 (Mapbooks, 1991 & 1998).
Artillery's Astrologers - A History of British Survey and Mapping on the Western Front, 1914-1918 (Mapbooks, 1999).
Grasping Gallipoli - Terrain, Maps and Failure at the Dardanelles (with Peter Doyle) (Spellmount, 2005).
Rats Alley - Trench Names of the Western Front, 1914-1918 (Spellmount 2006).