| Place of birth | Oamaru, New Zealand |
| Other Names | BAKER, Walter Headland Valentine |
| Religion | Church of England |
| Occupation | Clerk |
| Address | Spearwood P O, Spearwood, Western Australia |
| Marital status | Married |
| Age at embarkation | 46 |
| Next of kin | Wife, Mrs Gertrude Baker, Spearwood P O, Spearwood, Western Australia |
| Enlistment date | 29 September 1915 |
| Place of enlistment | N/A |
| Rank on enlistment | Lieutenant |
| Unit name | 4th Tropical Force, F Company |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT SS Te Anau on 20 November 1915 |
| Rank from Nominal Roll | Captain |
| Unit from Nominal Roll | 34th Battalion |
| Fate | Discharged 13 November 1917 |
| Miscellaneous details | Also served INF34CC as CAPT |
