The War and Air papers contain correspondence, minutes, printed material and other papers which were created or accumulated as a result of WSC's activities as Secretary of State for War and Air, positions he held concurrently from January 1919 to February 1921 (he continued as Secretary of State for Air while Secretary of State for the Colonies until April 1921). The papers have been divided into correspondence, WSC's outgoing minutes, and subject-based files and are arranged chronologically.The War and Air material covers WSC's routine ministerial duties as Secretary of State as well as specific issues of the period including: the demobilisation of British troops following the end of World War I; the reorganisation of the Air Ministry; Britain's involvement in the Russian Civil War and the related conflict between Russia and Poland; the fear of the spread of Bolshevism; matters discussed at the Paris [France] Peace Conference; British military control in the middle east, particularly concerning Mesopotamia [later Iraq]; military activity in Ireland.The material contains correspondence with WSC's ministerial colleagues and senior military figures of the day, such as General Sir Henry Wilson [Chief of Imperial General Staff]. It contains much addressed to WSC's deputy Sir Archibald Sinclair [later 1st Lord Thurso, Personal Military Secretary to the Secretary State for War] and there are several files devoted to information sent by Brigadier-General Edward Spears and the British Military Mission in Paris. There are also a number of files of intelligence reports, as well as several folios in assorted files, which remain closed and have been removed on Cabinet Office instructions.