30 July 1906 Lieutenant RAMC. Achieved 487 marks in the competitive examination for a commission in the RAMC.
1908–1909 Served in Crete.
Malta 22 Jan 1909 Arrived from Crete.
On duty at Cottonera Malta.
9 Aug 1909 On leave in England.
28 Nov 1909 Returned to Malta.
Malta 30 Jan 1910 Captain RAMC.
Malta 1910 On duty at the Forrest Military hospital St Julian's.
Malta 19 July 1911 Capt Robert Walter Dickson Leslie RAMC, aged 28 years, son of Thomas Christie Leslie, deceased, married Miss Eleanor Violet Jackson, aged 19 years, daughter of Roundell Palmer Jackson, deceased, at the English Cathedral Church St Paul's Valletta. The couple left Malta for England on honeymoon on 7 August.
18 Oct 1911 Returned to Malta.
Malta 17 Apr 1912 Home leave.
June 1912 Returned to Gosport England.
1914 Specialist in hygiene.
28 July 1914 Start of the Great War.
4 Aug 1914 Britain declares war on Germany.
30 July 1918 Major RAMC.
1918–1919 Assistant Director of Medical Services HQ Ambulance Train in France.
1919 Assistant Director of Medical Services Sanitation.
1921–1926 Served in Egypt.
23 Aug 1930 Lieutenant Colonel RAMC.
1930–1932 Deputy Assistant Director of Medical Services, India.
5 May 1934 Colonel L/RAMC.
1935–1937 Commanding Officer Queen Alexandra Military Hospital Millbank.
Sept 1936 Deputy Director of Medical Services HQ Palestine and Transjordan.
1935–1937 Commanding Officer Queen Alexandra Military Hospital, London.
Jan 1937–1941 Deputy Director of Medical Services HQ Northern Command, York.
10 Aug 1937 Major-General L/RAMC.
10 Aug 1941 Retired.