| 1914 | 1915 | 1916 | 1917 | 1918 |
|---|
| Brigade. | Regiment. | Brigade. | Regiment. | Brigade. | Regiment. | Brigade. | Regiment. | Brigade. | Regiment. |
|---|
| Infantry. | 41. | 87. | 41. | 87. | 42. | 80 Fus. | 42. | 80 Fus. | 42. | 80. |
| | | 88. | | 88. | | 81. | | 81. | | 81. |
| | 42. | 80 Fus. | 42. | 80 Fus. | | 87. | | 87. | | 87. |
| | | 81. | | 81. | | | | | | |
| Cavalry. | 6 Uhlan Regt. | | 6 Uhlan Regt. (3 Sqns.). | (?) 5 Sqn. 6 Dragoon Rgt. | 2 Sqn. 6 Drag. Rgt. |
| Artillery. | 21 Brig.: | 21 Brig.: | 21 Brig.: | 21 Art. Command: | 21 Art. Command: |
| | 27 F. A. Rgt. | 27 F. A. Rgt. | 27 F. A. Rgt. | 27 F. A. Rgt. | 27 F. A. Rgt. |
| | 63 F. A. Rgt. | 63 F. A. Rgt. | 63 F. A. Rgt. | | 2 Abt. 14 Ft. A. Rgt. (5, 6, and 7 Btries.). |
| | | | | | 731 Light Am. Col. |
| | | | | | 1101 Light Am. Col. |
| | | | | | 1131 Light Am. Col. |
| Engineers and Liaisons. | | 1 Pion. Btn. No. 21: | 1 Pion. Btn. No. 21: | (1/21 or 134) Pion. Btn.: | 21 Pion. Btn.: |
| | | Field Co. 21 Pions. | 1 Co. 21 Pions. | 1 Co. 21 Pions. | 1 Co. 21 Pions. |
| | | 21 Pont. Engs. | 5 Co. 21 Pions. | 5 Co. 21 Pions. | 5 Co. 21 Pions. |
| | | 21 Tel. Detch. | 21 T. M. Co. | 21 T. M. Co. | 18 Searchlight Section. |
| | | | 21 Tel. Detch. | 21 Searchlight Section. | 21 T. M. Co. |
| | | | 21 Pont. Engs. | 21 Tel. Detch. | 21 Signal Command: |
| | | | | | 21 Tel. Detch. |
| | | | | | 41 Wireless Detch. |
| Medical and Veterinary. | | | | 46 Ambulance Co. | 46 Ambulance Co. |
| | | | | 36 Field Hospital. | 154 Field Hospital. |
| | | | | 21 Vet. Hospital. | 303 Field Hospital. |
| | | | | | 21 Vet. Hospital. |
| Transports. | | | | 554 M. T. Col. | 554 M. T. Col. |
| Attached. | | | | 54 M. G. S. S. Detch. | |