Norway
Norway, just like more populated countries, needs a defense in place just in case. The population of Norway is relatively low. Due to that, their military population is also pretty low, with only 6,500 active members in the military at any given time. There are 46,000 reserved though, just in case they're needed.
Argentina
The senior military service of the Armed Forces of the Argentine Republic is not to be messed with, especially since they had a budget of $5.6 million. Their divisions are relatively small, with only about 75,000 active military members. The army's motto is "Born with the Fatherland in May 1810."