Correspondence and memoranda relating to SOE policy and activities in East and South East Asia (SEA) and elsewhere, including: details of the range, capabilities and potential modifications of Liberator heavy bombers and other aircraft for SOE India; notes on the need for a military Chief of Staff to ‘BB 100’ [Colin Mackenzie], Commander of the SOE India Mission; routine documents concerning SOE administration, communications, personnel, and security issues; correspondence relating to the SOE West Africa Mission; a letter from ‘CD’, head of SOE, on SOE co-operation with Soviet NKVD personnel and Operation Pickaxe missions to infiltrate Soviet agents into occupied Europe; report on SOE India's organisation, actions, and integration with SEAC (South East Asian Command); letter to ‘BB 100’, with related code key, concerning a scheme to convey information from ‘G’ [William Stephenson], Head of British Security Co-Ordination (BSC), USA, to Lord Mountbatten, SACSEA (Supreme Allied Commander South East Asia); a directive to Capt G A Garnons-Williams as co-ordinator of SIS, OSS (Office of Strategic Services, the US counterpart to SOE), SOE and the PW (Political Warfare) Section in SEAC (South East Asia Command).