| 1867: |
55th Megantic Battalion of Infantry
│ |
| 1871: |
55th Battalion "Megantic Light Infantry"
│ |
| 1900: |
55th Regiment "Megantic Light Infantry" |
|
│ |
| 1912: |
disbanded
|
| 1914: |
55th Regiment |
|
│ |
|
 |
 |
| 1920: |
1st Battalion
(199th Battalion, CEF), |
2nd Battalion, |
|
The Irish Canadian Rangers |
|
[Non Permanent Active Militia] |
[Reserve] |
|
 |
|
│ |
│ |
| 1936: |
disbanded |
disbanded |
|
|
|
Overseas battalion of the Canadian Expeditionary Force
perpetuated by The Irish Canadian Rangers (disbanded) |
| |
|
199th Battalion
Duchess of Connaught’s Own
Irish Canadian Rangers |
|
 |
| |