Files relating to the Ministry of Munitions Department of Trench Warfare, 1915-1916, (fols. 1-220) 'Staff', general papers of the Trench Warfare Department, including the appointment of members of an Advisory Committee on Chemicals, 1915-1916; (fols. 221-389) 'Early papers/difficulties with the War Office'; (fols. 390-401) memorandum by Alexander Roger, 1915, following a complaint by Lloyd George over a discrepancy between forecasts and supplies of munitions.