канада только недавно разрешила иммигрантам служить. но по прежнему, иностранцам вход заказан. и это понятно, если чужаков пускать с военной технике и секретам - 911 будет случаться гораздо чаще.

http://www.canada.com/story.html?id=9ca4bcac-83c8-4d83-8f79-5507c703cc66
By CanWest News Service August 21, 2006

The Canadian Forces may drop Canadian citizenship as a prerequisite for military service in order to boost the country's lagging troop strength.

http://www.cic.gc.ca/english/citizenship/become-eligibility-armed-forces.asp

The fast-track provision will accelerate citizenship for permanent residents serving in the CAF and foreign military members on exchange with the CAF