| Johnston | A | 25B/1 | Private | Frontier Wars. SAGS (1) 1879. KIA | Royal Warwickshire Regiment |
| Johnston | A | 2098 | Gunner | Frontier Wars. SAGS (1) 1879. 7th Brigade, No 10 Battery, Gattling Field Artillery | Royal Artillery |
| Johnston | A | 12724 | Sapper | Frontier Wars. SAGS (1) 1879. 2nd Company | Royal Engineers |
| Johnston | A | | | Source: QSA and KSA medal rolls | Cape Town Highlanders |
| Johnston | A | 5020 | Sapper | Arrived in Transvaal from England 21 Mar 1901.
QSA (5) CC OFS Tr SA01 SA02
TNA ref 156/43 | Royal Engineers, Railway Company, 10th |
| Johnston | A | | | Member of the late Legislative Assembly, Transvaal
262 of 580 awards | Unknown |
| Johnston | A | 4668 | Private | 1st Btn. Died of enteric at Estcourt. 12 Apr 1900.
Source: Natal Field Force Casualty Roll, page 164 line 50 | Durham Light Infantry |
| Johnston | A | 2571 | Sapper | Missing in action. Horwick, 17 May 1902
AWOL
Source: South African Field Force Casualty Roll | Royal Engineers, Field Company, 12th |
| Johnston | A | 5985 | Lance Corporal | QSA (3)
Source: List of QSAs with the clasp Talana from the Talana book | (Princess Victoria's) Royal Irish Fusiliers |
| Johnston | A | 274 | Private | Slightly wounded. Near Heilbron, 4 October 1901
Source: South African Field Force Casualty Roll | Kitchener's Fighting Scouts |
| Johnston | A | 4843 | Private | QSA (4).
Source: QSA medal rolls | 7th (The Queen's Own) Hussars |
| Johnston | A | | | 4th Battalion
Source: QSA and KSA medal rolls | Manchester Regiment |
| Johnston | A | | | Source: QSA and KSA medal rolls | 13th Battery, RFA |
| Johnston | A | 5985 | Lance Corporal | 1st Battalion
Source: QSA roll | (Princess Victoria's) Royal Irish Fusiliers |
| Johnston | A | | | 1st Battalion
Source: Medal rolls | (Princess Louise's) Sutherland and Argyll Highland |
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