No information on file for this battalion.
| # | Last Name | First Name | Initials | Rank | Regiment | Unit | Date of Death |
|---|---|---|---|---|---|---|---|
| 997 | Ballard | William | W | Sergeant | London Regiment (First Surrey Rifles) | 21st Bn. | 1917-10-18 |
| 3869 | Clare | Arthur Vernon | A V | Second Lieutenant | London Regiment (First Surrey Rifles) | 21st Bn. | 1916-09-15 |
| 4696 | Crompton | Robert | R | Sergeant | New Zealand Infantry | 21st Bn. | 1944-08-02 |
| 11366 | Johnstone | James Russell Clarke | J R C | Private | Australian Infantry, A.I.F. | 21st Bn. | 1917-05-03 |
| 12001 | Kemp | Charles Matthew | C M | Major | Manchester Regiment | 21st Bn. | 1917-10-09 |
| 12081 | Kerridge | James Wollie | J W | Sergeant | Middlesex Regiment | 21st Bn. | 1918-03-31 |
| 13295 | Lekgoa | Jim | J | Private | 21st Bn. | 1917-12-28 | |
| 17572 | Mosemeki | Charlie | C | Private | 21st Bn. | 1917-06-27 | |
| 17697 | Motomane | Elias | E | Private | 21st Bn. | 1918-02-05 | |
| 18338 | Nash | Philip Geoffrey | P G | Second Lieutenant | Manchester Regiment | 21st Bn. | 1917-10-05 |
| 18853 | Nkarabili | John | J | Private | 21st Bn. | 1917-12-20 | |
| 23289 | Skill | Harold Jefferson | H J | Captain | Middlesex Regiment | 21st Bn. | 1918-04-07 |
| 29136 | Zulane | John | J | Private | 21st Bn. | 1917-06-04 |