| Oneill | S | | | 2nd Battalion
Source: Medal rolls | Prince of Wales's Leinster Regiment (Royal Canadia |
| Oneill | T | | | 1st Battalion
Source: QSA and KSA medal rolls | Suffolk Regiment |
| Oneill | T | | | Source: QSA and KSA rolls | Imperial Light Infantry |
| Oneill | T | | | Attached 5th Battalion
Source: QSA and KSA medal rolls | Royal Dublin Fusiliers |
| Oneill | T | | | 2nd Battalion
Source: QSA and KSA medal rolls | (Prince of Wales's Own) West Yorkshire Regiment |
| Oneill | T | | | 2nd Battalion
Source: Medal rolls | Prince of Wales's Leinster Regiment (Royal Canadia |
| Oneill | T H | | | Source: WO100/279 | Cape Government Railways |
| Oneill | W | | | 1st Battalion
Source: QSA and KSA rolls | Imperial Light Horse |
| Oneill | W | | | 2nd Battalion
Source: Medal rolls | Royal Munster Fusiliers |
| Oneill | W | | | 1st Battalion
Source: Medal rolls | Royal Munster Fusiliers |
| Oneill | W | | | B Troop
Source: WO100/247 | Farmer's Guard (Burgher Police) |
| Oneill | W | | | 2nd Battalion
Source: QSA and KSA medal rolls | Lincolnshire Regiment |
| Oneill | W | | | 2nd Battalion
Source: QSA and KSA medal rolls | (Prince of Wales's Own) West Yorkshire Regiment |
| Oneill | W | | | Received the Mediterranean Medal
3rd Battalion
Source: Medal roll WO100 368 | (Queen's Own) Royal West Kent Regiment |
| Oneill | W F | | | 2nd Battalion
Source: QSA and KSA rolls | Imperial Light Horse |
|
|
