| Regimental number | 13353 |
| Place of birth | Clare, South Australia |
| Religion | Church of England |
| Occupation | Engineer |
| Address | Wood Street, Millswood, South Australia |
| Marital status | Single |
| Age at embarkation | 35 |
| Next of kin | Father, Alexander Buchanan, Wood Street, Millswood, South Australia |
| Enlistment date | 29 September 1916 |
| Rank on enlistment | Warrant Officer (Class I) |
| Unit name | Auxiliary Mechanical Transport Company 3, Head-Quarters |
| AWM Embarkation Roll number | 25/113/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A34 Persic on 22 December 1916 |
| Rank from Nominal Roll | Warrant Officer |
| Unit from Nominal Roll | Australian Motor Transport Section |
| Fate | Returned to Australia 23 March 1919 |
| Family/military connections | Brothers: 6917 Pte John St Clair BUCHANAN, 3rd Australian General Hospital, returned to Australia, 20 January 1919; 2133 Pte Robert Keith BUCHANAN, 5th Motor Transport Section, returned to Australia, 4 July 1919. |