| Mcmillen | A | 609 | Trooper | Source: Nominal roll in WO127 | Marshall's Horse |
| McMillen | A | 1783 | Private | Frontier Wars. SAGS (0) | Royal Scots Fusiliers |
| McMillen | Hugh | | | 2nd Battalion
Source: QSA and KSA medal rolls | Royal Inniskilling Fusiliers |
| McMillen | J | | | 5th Battalion
Source: QSA and KSA medal rolls | Royal Irish Rifles |
| McMillen | J | | | 1st Battalion
Source: Medal rolls | (Princess Louise's) Sutherland and Argyll Highland |
| McMillen | J | 32245 | Gunner | Died of disease. Middelburg, 25 October 1900
Source: South African Field Force Casualty Roll | 61st Battery, RFA |
| McMillen | James | | | 2nd Battalion
Source: QSA and KSA medal rolls | Royal Inniskilling Fusiliers |
| McMillen | Kenrie James | 971 | Corporal | 1st RPR
Source: Nominal roll in WO127 | Railway Pioneer Regiment |
| McMillen | M | 30490 | Private | Source: QSA Medal Rolls | 60th Company, 17th Btn, IY |
| McMillen | R | 5083 | Private | QSA (4). Initials 'R.J.' on E.C. Roll.
Source: QSA medal rolls | 17th (The Duke of Cambridge's Own) Lancers |
| Mcmillen | R | | | Source: QSA and KSA medal rolls | South African Constabulary |
| Mcmillen | Robert | 777778 | | Attested: Sep 1902. Source: CMP 35 | Cape Police |
| McMillen | W | | | 5th Battalion
Source: QSA and KSA medal rolls | Royal Irish Rifles |
| McMillen | W | 21166 | Trumpeter | Prisoner. Dewetsdorp, 23 November 1900
Released 5 December
Source: South African Field Force Casualty Roll | 68th Battery, RFA |
| McMillen | W J | | | Source: QSA and KSA medal rolls | 68th Battery, RFA |
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