Donald Hamilton Smith was born on the 18th of August 1915 at Encounter Bay, South Australia.
- 1940: No. 3 Elementary Flying Training School, Essendon
- 1940: No. 2 Service Flying Training School, Wagga
- 1940-08-18: No. 1 Initial Training School, Somers
- 1941: No. 60 Operational Training Unit, East Fortune, Scotland
- 1941-10-11: Promoted to Pilot Officer
- 1942-04: No. 452 Squadron
- 1942-05: No. 126 Squadron
- 1943-05-03: No. 41 Squadron
- 1943-10-14: Promoted to Flight Lieutenant
- 1944-05-02: Commanding Officer, No. 453 Squadron; Acting Squadron Leader
- 1944-07-01: Promoted to Squadron Leader
- 1945: Commanding Officer, No. 11 Personnel Dispatch and Reception Centre
- 1945-02: Acting Wing Commander
Smith was also awarded the Soviet Medal of Valour.
DFC Citation: "Squadron Leader SMITH is a most efficient Squadron Commander. He has participated in a very large number of varied sorties and has proved himself to be a gallant and skilful leader. This officer has destroyed at least three enemy aircraft."
