Supplementary Order of Battle
In the Canadian Army, the Supplementary Order of Battle is a category of regiments that are reduced to zero strength but continues to exist administratively. This is done when the need for the regiment's continued operation is no longer relevant, and the regiment is re-manned only when the Department of National Defence deems the unit is required again.
Source: Wikipedia — Supplementary Order of Battle (CC BY-SA 4.0)