Australian Military Units
Colonel John McLean Arnott
| Date and unit at appointment (Officers) | 1914-10-17 | Appointed to the 9th Light Horse Regiment. |
| Other units | 1914-10-17 - 1915-08-08 | Commanding Officer of the 7th Light Horse Regiment. |
| Other units | 1916-02-01 - 1916-02-13 | Commanding Officer of the 12th Light Horse Regiment. |
| Date returned to Australia | 1918-05-20 |
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