https://www.cbc.ca/news/politics/federal-government-mandatory-vaccinations-1.6140131
Note the date - day before the GC implemented the public service and travel mandate.
There was no basis for a broad mandate for the CAF, but somehow the GC found the basis for a broad mandate for the civilian population.
Ironically, it's signed by Gen Eyre, the same CDS that went on firing all those troops.