| 1910: | 26th Stanstead Dragoons | |
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| 1920: | 1st Regiment (5th Canadian Mounted Rifles Battalion, CEF), |
2nd Regiment, |
| The Eastern Township Mounted Rifles | ||
| [Non Permanent Active Militia] | [Reserve] | |
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| │ | │ | |
| 1936: | 27th Field Brigade, Royal Canadian Artillery |
disbanded |
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| 1940: | 27th (Reserve) Field Brigade, Royal Canadian Artillery │ |
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| 1943: | 27th (Reserve) Field Regiment, Royal Canadian Artillery │ |
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| 1943: | 27th Field Regiment, Royal Canadian Artillery │ |
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| 1960: | 27th Field Artillery Regiment │ |
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| 1970: | [Supplementary Reserve] │ |
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| Overseas unit of the Canadian Expeditionary Force perpetuated by The Sherbrooke Hussars |
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| 5th Canadian Mounted Rifles Battalion |
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1936: perpetuation transferred to 7th/11th Hussars |
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