| Mccallum | J | | | Source: WO100/284 | Port Elizabeth TG |
| McCallum | J | | | 2nd Battalion
Source: QSA and KSA medal rolls | Royal Scots Fusiliers |
| McCallum | J | | | Source: Medal rolls | (Princess Louise's) Sutherland and Argyll Highland |
| McCallum | J | | | 3rd Volunteer Battalion
Source: Medal rolls | (Princess Louise's) Sutherland and Argyll Highland |
| McCallum | J D | | Private | QSA (1)
Source: List of QSAs with the clasp Defence of Kimberley | Kimberley TG |
| Mccallum | J G | | | Source: QSA and KSA medal rolls | South African Constabulary |
| Mccallum | J G | | Bearer | Served 12 Dec 99 to 12 Mar 00.
Source: Nominal roll in WO127 | Natal Volunteer Ambulance Corps |
| Mccallum | J G | | | Source: QSA and KSA medal rolls | South African Constabulary |
| McCallum | J G | 809 | Private | Slightly wounded. Blesbokpan, 29 November 1901
E Division.
Source: South African Field Force Casualty Roll | South African Constabulary |
| McCallum | J H | | | 5th Battalion
Source: QSA and KSA medal rolls | Royal Irish Rifles |
| McCallum | J McC | 41073 | Trooper | 2nd Battalion
Source: QSA Medal Rolls | Scottish Horse |
| McCallum | James | 31870 | Trooper | 2nd Battalion
Source: QSA Medal Rolls | Scottish Horse |
| McCallum | James | 41073 | Trooper | Served 01 Mar 02 to 06 Jul 02. Discharged Disbandment
Source: Nominal roll in WO127 | Scottish Horse |
| McCallum | James | 31870 | Lance Corporal | Served 20 Mar 01 to 14 Sep 01. Discharged Completion of Service
Source: Nominal roll in WO127 | Scottish Horse |
| McCallum | James | 2962 | Private | BSACM Matabeleland 1893 (0).
Source: BSACM rolls | Black Watch (Royal Highlanders) |
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