Who’s invading Canada? Either way the CAF isn’t a deterrence in its current state. You’re better off to arm 40 million people.
Peace Order and Good Government.
That is what our parliament is charged with maintaining.
To do that they need help.
These days the peace is disturbed.
These days public disorder is becomoing uncreasingly common.
I will leave the quality of the government alone.
The civil power is in need of aid.
And that too is a duty of the CAF.
It has been, in the English speaking world at least, since Alfred built his burhs.
The navy and the air force conduct standing patrols and maintain OPs daily in aid of the civil power.
They supply ISR. They supply an immediate reaction capability. They provide support. They provide a deterrence.
Space, cyber, sigs, int, psy-ops and info-ops fall into the same category.
The army is different.
It is not engaged daily.
Its job is to anticipate the unanticipated and organize Canadians accordingly.
Combat in various environments is one task set for the army, even the primary one.
But providing security, defending public spaces, relieving pressure on the agents of the civil power, these too are tasks for the army.
And relieving pressure can be done by supplying transport and communications, medical assistance, shelter-heat-sanitation-water-food,.
All the things combat arms need to function in the field.
The army's main job is to organize and train people in sufficient numbers that the unexpected can be managed.
Not all of those people have to be on the payroll.