well
Aussies definately need it
they have twice the amount of military when they are only 2/3 of Canada

they are surrounded by foreign countries and also the South China sea nearby makes a good war topic if you know what im talking about

also canada needs it to defend itself
incase if USA got shelled by nuclear weaps and lots its abilities to fight back
Canada is the only neighbour to trust
UN takes a while to get the troops to one place