[3] In September 1914, following the outbreak of the First World War, he joined the Royal Field Artillery serving as a 2nd Lieutenant in France and Flanders.
[4] In September 1919 he joined the Occupied Enemy Territory Administration (OETA) in Palestine and nine months later he was appointed Assistant Principal Medical Officer, based in Jerusalem.
[5] During the late 1920s, as deputy head of the Palestinian Department of Health, Dr Macqueen was involved in the establishment of the first infant welfare centres in Jerusalem's Old City and Bethlehem.
[11] In the summer of 1941 during an outbreak of Bubonic plague he was in charge of the demolition of the several thousand huts and temporary homes in and around Haifa and introduced a program of rat extermination.
In 1942 there was a critical fall in conditions in privately run mental hospitals in Tel Aviv when the municipality stopped funding them.
At the time the High Commissioner, Sir Harold MacMichael, commented that the treatment of the insane in Palestine "reflected badly on the Government".
[14] The 1946 "Survey of Palestine", prepared for the Anglo-American Committee of Inquiry, commented that Government expenditure on health care was low compared to other countries and that medical policy had not been carried out.