All the Churchills supported their father. The children, to varying degrees, served him – and their country – in the Second World War, too. Diana served in the Women’s Royal Naval Service (WRNS), Sarah with the Photographic Interpretation Unit of the Women’s Auxiliary Air Force (WAAF) and Mary served in the armed forces in mixed anti-aircraft (AA) batteries with the Auxiliary Territorial Service (ATS). Mary also attended the Quebec conference of 1943 as an aide to her father, while Sarah played a similar role at Teheran in 1943 and Yalta in 1945. Randolph served as an Intelligence Officer in the Middle East, was attached to the newly formed Special Air Service (SAS), and undertook missions in the Libyan desert and in Yugoslavia.