Absence of military (notes):
This list shows countries that have no permanent army, whose defense has been assigned to non-military forces such as the police, or is assumed by the military forces from other countries by virtue of a treaty. Each entry describes the current status of each country on regards to its defense.
The names of the ground, naval, air, marine, and other defense or security forces
Manpower reaching military age annually > Males:
This entry is derived from Military > Manpower reaching military age annually, which gives the number of males and females entering the military manpower pool (i.e., reaching age 16) in any given year and is a measure of the availability of military-age young adults.
This entry lists the service branches subordinate to defense ministries or the equivalent (typically ground, naval, air, and marine forces).
Australia is responsible for Nauru's defense under an informal agreement between the two countries. However, there is a relatively large armed police force , and an auxiliary police force for internal security.