| Regimental number | 1632 |
| Place of birth | Barossa, South Australia |
| School | Woodside and Murdoch's Hill Public School, South Australia |
| Religion | Church of England |
| Occupation | Ganger, South Australian Railways |
| Address | Littlehampton, South Australia |
| Marital status | Widower |
| Age at embarkation | 42.2 |
| Height | 5' 7" |
| Weight | 151 lbs |
| Next of kin | Daughter, Miss Mavis Ray Colley, Littlehampton, South Australia |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Adelaide, South Australia |
| Rank on enlistment | Private |
| Unit name | 43rd Battalion, 1st Reinforcement |
| AWM Embarkation Roll number | 23/60/2 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A19 Afric on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 43rd Battalion |
| Other details from Roll of Honour Circular | Died of illness, Calais Hospital. |
| Fate | Died of disease |
| Age at death | 43 |
| Place of burial | Calais Southern Cemetery (Plot F, Row 5, Grave No. 15), France |
| Panel number, Roll of Honour, Australian War Memorial | 136 |
| Miscellaneous information from cemetery records | Parents: Mark William and Hilda Lucy COLLEY, South Australia |
| Family/military connections | Nil |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, COLLEY Mark William |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
