| Armstrong | James Ernest Lorraine | 2254 | Private | Source: OZ-Boer database | Victoria, 4th Battalion Australian Commonwealth Ho |
| Armstrong | James Henry | | Trooper | Source: Nominal roll in WO127 | Nesbitt's Horse |
| Armstrong | James John | | | | Town Guard and District Mounted Troops |
| Armstrong | James Matthew | 4303 | Private | Source: QSA Medal Rolls | 62nd Company, 11th Btn, IY |
| Armstrong | James St G P | | Trooper | Unit: D. troop. Nationality: Irish. Age: 24, Address: Garry Castle, Bandghes, King/'s Co, Ireland.
Source: List of Jameson raiders | Unknown |
| Armstrong | James St George P | | Lieutenant | Source: QSA Medal Rolls | 7th Company, 4th Btn, IY |
| Armstrong | James Wadworth | 9386 | Trooper | Source: Nominal roll in WO127 | Kitchener's Horse |
| Armstrong | James William | 36758 and 26 | Trooper | 1st Battalion
Source: Nominal roll in WO127 | Imperial Light Horse |
| Armstrong | Jas Adam | | Corporal | BSACM Mashonaland 1897 (0).
Source: BSACM rolls | British South Africa Police |
| Armstrong | Jock Kingsley | 20388 | Trooper | Source: Nominal roll in WO127 | Prince of Wales Light Horse |
| Armstrong | John | | Bearer | Joined 09 Dec 99
Source: Nominal roll in WO127 | Natal Volunteer Ambulance Corps |
| Armstrong | John | | Sergeant | BSACM Rhodesia 1896 (0).
Source: BSACM rolls | Afrikander Corps |
| Armstrong | John | 3583 | Private | BSACM Matabeleland 1893 (0). 3583 Private John Armstrong served with the 2nd Battalion in South Africa and was killed in action at Magersfontein. BSACM reverse Matabeleland 1893 (3583 Pte. J. Armstrong, 1st Batt. R. Highls. ). DNW July 2001 £1,250. DNW June 2014 £2,200.
Source: BSACM rolls | Black Watch (Royal Highlanders) |
| Armstrong | John | 674 | Private | Source: OZ-Boer database | Queensland, 6th Imperial Bushmen Contingent |
| Armstrong | John | | | 2nd Battalion
Source: QSA and KSA rolls | Imperial Light Horse |
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