I'm not certain how easy it is in the forces to get cushy stay at home jobs, but Canada actually contributes disproportionately highly to armed conflict when compared to the US, it has participated heavily in quite a few recent actions[1]. Both armed forces have logistical and bureaucratic arms along but only the US (AFAICT) has a dedicated stay-at-home path via the National Guard.
1. https://en.wikipedia.org/wiki/Military_history_of_Canada#Pos...