This class contains 165 files of papers relating to WSC's time as Minister of Munitions, 17 July 1917 to 10 Jan 1919. The papers are not arranged chronologically, but in groups. Under WSC the Ministry was re-organised into ten divisions, each represented on the Munitions Council and identified with a single letter. This pattern provided a natural method of arranging the bulk of the records, but a degree of overlap between the divisions was unavoidable. The Ministry was organised as follows: A Allies or Air D Inventions and Design E Engineering, including tanks F Finance G Guns L Labour M Materials P (also ) O Projectiles R Requirements and Statistics S Steel and Iron X Explosives Chemical Warfare, which had a very varied existence, has been arranged separately The general outline of the arrangement of the class is: 1. Papers relating to subjects or bodies within or attached to the Ministry but outside the alphabetical divisions, including those relating to the period before WSC's appointment (Files 1-29) 2. Papers relating to external bodies (Files 30-39) 3. The Munitions Council (Files 40-47) 4. The Divisions in alphabetical order (Files 48-154) 5. An incomplete set of the Minister's registered correspondence and minutes, which came to light after the arrangement had been completed.