| Callen | A A | | Stoker | QSA (0). Ref: 284.668.
Source: QSA medal rolls | HMS Sybille |
| Callen | A J | | Able Seaman | QSA (0). Ref: 183.230.
Source: QSA medal rolls | HMS Racoon |
| Callen | Harry Hopkins | 56 | Private | District Mounted Rifles
Source: Nominal roll in WO127 | District Mounted Rifles |
| Callen | J | | | 2nd Battalion
Source: QSA and KSA medal rolls | Grenadier Guards |
| Callen | J | 6257 | Private | 2nd Battalion
Source: QSA roll | (Princess Victoria's) Royal Irish Fusiliers |
| Callen | James | | | Source: QSA and KSA medal rolls | 86th Battery, RFA |
| Callen | T | | Lieutenant | MID LG: 8 May 1900, page: 2919. Source: Lieutenant Colonel Kekewich's report. 15 February 1900. Re: Kimberley
This page contains all the London Gazette pages for the Boer War | Kimberley TG |
| Callen | Thomas | | Lieutenant | QSA (1)
Source: List of QSAs with the clasp Defence of Kimberley | Kimberley TG |
| Callen | V R | 26740 | Sapper | To England 4 Jul 1902. To Army Reserve. QSA (5) sent 15 Oct 1903.
QSA (5) CC OFS Joh DH Belf. KSA
TNA ref 156/73; 313/114 | Royal Engineers, Field Company, 12th |
| Callen | W | 7400 | Rifleman | 1st Battalion
Demise: Killed by lightning 05 Nov 1901
Place: Vlakfontein Nek
Source: In Memoriam by S Watt | (Prince Consort's Own) Rifle Brigade |
| Callen | W | | | Source: QSA and KSA medal rolls | South African Constabulary |
| Callen | W | 7400 | Private | Killed. Vlakfontein Nek, 5 November 1901
1st Battalion. By lightning
Source: South African Field Force Casualty Roll | (Prince Consort's Own) Rifle Brigade |
| Callenbach | G | | | Volunteer from Holland / Belgium serving with the Boer forces
Source: Anglo Boer War Museum database, August 2016 | Belgian and Dutch volunteers |
| Callendar | Fenley James | 496 | Private | Source: OZ-Boer database | West Australia, 6th Mounted Infantry Contingent |
| Callendar | J | | | 1st Battalion
Source: QSA and KSA medal rolls | Gordon Highlanders |
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