NAURU| Nauru maintains no defense forces; under an informal agreement, defense is the responsibility of Australia | |
| Military branches: | no regular military forces; Nauru Police Force (2009) |
| Manpower available for military service: | males age 16-49: 3,470 (2009 est.) |
| Manpower fit for military service: | males age 16-49: 2,592 females age 16-49: 2,966 (2009 est.) |
