| Appointment. | Rank. | Name. | Memoranda. |
| Commanding Officer | Lt.-Colonel | Collett, H. B. | Commanded Battn. 23/4/1915 to 29/7/1916 (severely wounded), and from 13/10/1917 to 22/3/1918. Transferred to General List. Mentioned in Despatches. Promoted Colonel. C.M.G., D.S.O. Mentioned by the Secretary of State for War. Promoted Brevet Colonel, Australian Military Forces, for “special meritorious service.” |
| Second-in-command | Major | Davies, C. R. | Transferred to 58th Battn., 1916. Promoted Lt.-Colonel. O.B.E. Previously served in the South African War, 1901-1902. |
| Adjutant | Captain | Lamb, C. H. | Invalided 1915. Returned with 44th Battn., 1916. Wounded. Promoted Major M.C. |
| Quartermaster | Hon. Lieut. | Dunn, R. | Resigned Commission, 1915. |
| Signalling Officer | 2nd Lieut. | Scouler, J. J. S. | Transferred to Australian Cyclist Battalion, March 1916. Promoted Captain. French Croix de Guerre. |
| Transport Officer | | Graham, T. D. | Seconded with Imperial Camel Corps, Jan., 1916. Transferred to 4th Pioneer Battn., 1916. Promoted Captain and Adjutant. Killed in action. Belgium 2/10/1917. |
| Machine Gun Officer | 2nd Lieut. | Shaw, G. D. | Transferred to 2nd Pioneer Battn., 1916. Wounded on two occasions. Mentioned in Despatches. Promoted Captain. M.C. |
| “A” Company | | | |
| Officer Commanding | Major | Wilson, J. A. C. | Invalided 12/11/1915. |
| 2nd-in-Command | Captain | Montgomery, A. M. P. | Invalided 1915. Returned from Australia with Reinforcements 1916, and rejoined, 1917. Severely wounded, 1917, and again invalided. |
| O.C. No. 1 Platoon | Lieutenant | Davey, A. H. | Promoted Captain. Invalided 1916. |
| O.C. No. 2 Platoon | 2nd Lieut. | Pugh, C. H. | Wounded. Promoted Captain. |
| O.C. No. 3 Platoon | 2nd Lieut. | Denson, H. R. | Seconded with Imperial Camel Corps, Jan., 1916. Thence transferred to 14th Light Horse. Served in Sinai and Palestine with that Regiment. Promoted Major. D.S.O. |
| O.C. No. 4 Platoon | 2nd Lieut. | Read, G. A. | Promoted Lieut.-Colonel. Commanded Battalion from 5/1/17 to 28/9/17. Severely wounded. Invalided. Thrice mentioned in Despatches. D.S.O. Montenegrin Order of Danilo, 5th Class. |
| “B” Company | | | |
| Officer Commanding | Major | Jeffrey, F. R. | Attached to 27th Battn., 8/6/15. Afterwards transferred to that unit. Previously served in the South African War with City Imperial Volunteers. |
| 2nd in Command | Captain | Stroud, W. G. | Commanded “B” Company until October, 1915. Invalided. |
| 2nd in Command | Lieut. | Jackson, P. E. | Attached from 27th Battn., vice Major Jeffrey. Promoted Captain. Died of wounds, France, 31/5/16. |
| O.C. No. 5 Platoon | 2nd Lieut. | Ruddock, H. E. C. | Acting Adjutant, Oct.-Nov., 1915. Died of pneumonia, Egypt, 22/11/15. |
| O.C. No. 6 Platoon | Lieut. | Gibbings, C. T. | Commanded “B” Company in 1916. Promoted Captain. Killed in action, France, 29/7/16. |
| O.C. No. 7 Platoon | 2nd Lieut. | Hargraves, G. A. | Invalided Oct., 1915. Rejoined Sept., 1917. Wounded. Invalided Nov., 1917. Promoted Captain. |
| O.C. No. 8 Platoon | 2nd Lieut. | Sundercombe, N. W. | Seconded to command 7th Light Trench Mortar Battery, 1916-17. Rejoined Battn., 1918. Mentioned in Despatches. Promoted Captain. M.C. |
| “C” Company | | | |
| Officer Commanding | Major | Leane, A. W. | Commanded Battn. from 30/7/16 to 4/1/17. Promoted Lieut. Colonel. Died of wounds, France, 4/1/17. |
| 2nd-in-Command | Lieut. | Isaac, A. S. | Commanded “C” Company, March-July, 1916. Promoted Captain. Severely wounded 29/7/16. Invalided. |
| O.C. No. 9 Platoon | 2nd Lieut. | Jensen, F. E. | Died of wounds, Gallipoli, 13/9/15. Previously served in the South African War. |
| O.C. No. 10 Platoon | 2nd Lieut. | Phillips, R. C. | Promoted Captain. Twice wounded. Transferred to Australian Flying Corps, April 1917. Promoted Major. M.C. and Bar. D.F.C. |
| O.C. No. 11 Platoon | 2nd Lieut. | Carter, L. J. | Invalided 1915. |
| O.C. No. 12 Platoon | 2nd Lieut. | Smith, G. A. F. | Transferred to 47th Battn., 1916, and afterwards to 15th Battn. Promoted Captain. |
| “D” Company | | | |
| Officer Commanding | Major | Welch, L. B. | Killed in action, France, 28/7/16. |
| 2nd-in-Command | Captain | Menz, H. B. | Died of enteric fever, Egypt, 27/11/15. |
| O.C. No. 13 Platoon | 2nd Lieut. | Glyde, E. G. | Wounded on four occasions. Promoted Major. Belgian Croix de Guerre. |
| O.C. No. 14 Platoon | Lieut. | Macrae, N. F. | Commanded “A” Company, 1915-16. Promoted Captain. Killed in action, France, 29/7/16. |
| O.C. No. 15 Platoon | 2nd Lieut. | Foss, C. M. | Acting Adjutant, 1916. Promoted Captain. M.C. Died of wounds, France, 11/8/16. |
| O.C. No. 16 Platoon | 2nd Lieut. | Nicholls, T. O. | Transferred to 7th Machine Gun Company, 1916, and subsequently commanded that unit. Mentioned in Despatches. Promoted Captain. M.C. Severely wounded 4/10/17 and invalided. |
| Attached | | | |
| Medical Officer | Captain | Kenny, J. | A.A.M.C. Transferred from France to Egypt, 1917. Promoted Major. |
| Chaplain | 4th Class | Brennan, Very Rev. D. A. | Promoted to Chaplain, 2nd Class. |