This series consists mainly of topographical maps produced during the spasmodic series of operations in Mesopotamia which involved British, Indian, Russian, Turkish and German forces. Many were produced by the Survey of India and bear TC (Tigris Corps) numbers, a label which continued to be used after the Tigris Corps lost its unique mapping functions.
Maps were also produced by the Home and Indian military departments; the Geographical Section General Staff (War Office), and the General Staff, India, often using the civil map production organisations: the Ordnance Survey in England and the Survey of India.
The series also includes maps produced during post-war operations following the break-up of the Turkish and Russian empires.
The series includes maps formerly held by the Cabinet Office Historical Section.
WO 302/1-37 are graphic indexes and key sheets.