Attempting to make inroads into actually joining a foreign military institution as a non-native is most likely prohibited by law (or else we'd have Al Qaeda infiltrating our armed services ranks...).
Actually.....
Though I did not know it was
this high:
"41,000 foreign citizens in the U.S."
(many?) are called "Green Card Recruits" and some of the first "coalition" soldiers dead in Iraq were non-citizens. According to this
father they are typically sent to the front lines.
Every country would have different rules.
I would guess the US is an exception to what seems to me the opposite would be the norm.
Mike Cash is probably right on this topic for Japan.
It did at first surprise me, but maybe it shouldn't have, in an attempt to keep the number of dead Us soldiers down (and since this particular act of agression requires more than arming death squads as they did in 80s central america because most Americans are morally opposed to empire[trash] ),
they use all the stops to prevent a draft: the "poverty draft"; the back-door draft which includes extending tours, calling back people whose two or so years after being out has passed (usually they can be called back within X number of years but they've been calling up people regardless).
To tell you the truth, I don't know why they have a problem having some 2 million?
troops in the armed forces.
Maybe they have to keep those over 700 known/acknowledged bases in over
120 different countries operating...?
Another foreign national's story
Staff Sgt. Camilo
Mejia, a Costa Rican citizen, also argues that under an 1851 treaty between his homeland and the United States, he cannot be forced to perform compulsory military service beyond eight years.