| Mills | William Checkley | 443 | Sergeant | Source: OZ-Boer database | West Australia, 6th Mounted Infantry Contingent |
| Mills | William Frederick | 26279 | Trooper | Source: QSA Medal Rolls | 58th Company, 15th Btn, IY |
| Mills | William George | 2109 | Trooper | Served in 1st KFS. Joined Durban 22 Mar 02 Discharged 6 Jul 02 disbandment Johannesburg
Source: Nominal roll in WO127 | Kitchener's Fighting Scouts |
| Mills | William Henry | 20204 | Trooper | Source: QSA Medal Rolls | 27th Company, 7th Btn, IY |
| Mills | William Holland | 40580 | Trooper | Source: QSA Medal Rolls | 144th Company, 32nd Btn, IY |
| Mills | William J. | | | Source: Attestation paper in WO126 | Brabant's Horse |
| Mills | William John | 1555 | Trooper | 2nd Battalion
Source: Nominal roll in WO127 | Imperial Light Horse |
| Mills | William Joseph | 1039 | Trooper | Served in 1st KFS. Joined Durban 7 Mar 01 Discharged 26 Sep 01 completion of service
Source: Nominal roll in WO127 | Kitchener's Fighting Scouts |
| Mills | William Robert | 472 | Private | Source: OZ-Boer database | Victoria, 6th Battalion Australian Commonwealth Ho |
| Mills | William Thain | 34339 | Trooper | Source: Nominal roll in WO127 | Commander-in-Chief's Bodyguard |
| Mills | William Thomas E J | 7720 | Private | Source: QSA Medal Rolls | 25th Company, 7th Btn, IY |
| Mills | William Walter | 7523 | | Source: Medal rolls | Canada, 2nd Royal Canadian Regiment of Infantry |
| Mills | Wm | | | Source: WO100/263 | Bushveldt Carabineers |
| Mills | Wm Thain | | | Source: QSA and KSA medal rolls | Southern Rhodesian Volunteers |
| Mills (Myles) | Benjamin Thomas | | Trooper | Served 07 Feb 1900 to 31 Mar 1900. Discharged completion of service
Source: Nominal roll in WO127 | Border Horse |
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