That is a good question.
The land forces are divided into four regions, each with an immediate response unit within an infantry battalion. We also have our search and rescue capacity and other national support elements. Is that a threshold or a standard? I don't know.
We have the mandate to maintain immediate and rapid response capability, within a battalion in each region of Canada, as well as search and rescue capability. We can also do more during an emergency or a crisis with other individuals available within the Canadian Forces.
We maintain an equilibrium with four groups, one in each region.
There are also watch-keeping facilities on each coast to help the Royal Canadian Mounted Police and Fisheries and Oceans Canada fulfil their mandate.