| 1867: | 58th Compton Battalion of Infantry │ |
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| 1900: | 58th Compton Regiment │ |
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| 1903: | 7th Hussars |
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| 1914: | 58th Westmount Rifles | ||
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| 1920: | 1st Battalion (14th Battalion, CEF), [Non Permanent Active Militia] |
2nd Battalion, [Reserve] |
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| The Royal Montreal Regiment | |||
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| 1920: | 1st (Westmount) Battalion (14th Battalion, CEF), |
2nd Battalion (23rd Battalion, CEF), |
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| The Royal Montreal Regiment | |||
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| 1936: | The Royal Montreal Regiment │ |
disbanded | |
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| 1940: | 2nd (Reserve) Battalion, | 1st Battalion, [Canadian Active Service Force] |
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| The Royal Montreal Regiment (M.G.) |
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| 1943: | │ │ │ |
32nd Reconnaissance Regiment (Royal Montreal Regiment) │ |
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| 1944: | │ │ │ │ |
First Army Headquarters Defence Company (Royal Montreal Regiment) │ |
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| 1945: | │ │ │ │ │ |
First Army Headquarters Defence Battalion (Royal Montreal Regiment) │ │ |
6th Canadian Infantry Division Reconnaissance Troop (The Royal Montreal Regiment) [Canadian Active Service Force] │ |
| 1945: | The Royal Montreal Regiment (M.G.) │ |
disbanded | disbanded |
| 1954: | The Royal Montreal Regiment | ||
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| Overseas battalions of the Canadian Expeditionary Force perpetuated by The Royal Montreal Regiment |
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| 14th Battalion (Royal Montreal Regiment) |
23rd Battalion | ||
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