I guess you have to do everything a foreigner needs to do, to
get a PR.. Tough luck. But anyway, I've seen lotsa 'old men' in
army.. They too just came back from donkey years overseas studies
trip, or some had been AWOL( Absent Without Official Leave), but
later surrendered, served Detention Barracks, then went on to BMT,
most went Civil Defence tho...
But after a certain age, u do not need to serve NS to gain
citizenship..
But its pretty ironic do ya agree? that seemingly tons of people
wanna get out, while u have problems coming back?? Maybe its
another pastels-are-greener-on-the-other-side-thingy. Anyway
goodluck!