| Country | Military service age and obligation |
| Marshall Islands | void |
| Mauritania | 18 years of age (est.); conscript service obligation - 2 years; majority of servicemen believed to be volunteers; service in Air Force and Navy is voluntary (2006) |
| Mauritius | void |
| Mayotte | void |
| Mexico | 18 years of age for compulsory military service, conscript service obligation - 12 months; 16 years of age with consent for voluntary enlistment; conscripts serve only in the Army; Navy and Air Force service is all voluntary; women are eligible for voluntary military service (2007) |
| Micronesia, Federated States of | void |
| Moldova | 18 years of age for compulsory military service; 12-month service obligation (2006) |
| Monaco | void |
| Mongolia | 18-25 years of age for compulsory military service; conscript service obligation - 12 months in land or air defense forces or police; a small portion of Mongolian land forces (2.5 percent) is comprised of contract soldiers; women cannot be deployed overseas for military operations (2006) |
| Montenegro | compulsory national military service abolished August 2006 |
| Montserrat | void |
| Morocco | 18 years of age for compulsory and voluntary military service; conscript service obligation - 18 months (2004) |
| Mozambique | 18-30 years of age for compulsory military service; 2-year service obligation (2006) |
| Namibia | 18-25 years of age for voluntary military service; no conscription (2008) |
| Nauru | void |
| Navassa Island | void |
| Nepal | 18 years of age for voluntary military service; 15 years of age for military training; no conscription (2008) |
| Netherlands | 20 years of age for an all-volunteer force (2004) |
| Netherlands Antilles | 16 years of age for National Guard recruitment; no conscription (2004) |
| New Caledonia | void |
| New Zealand | 17 years of age for voluntary military service; soldiers cannot be deployed until the age of 18; no conscription (2008) |
| Nicaragua | 17 years of age for voluntary military service; tour of duty 18-36 months (2008) |
| Niger | 18 years of age for compulsory military service; 2-year conscript service obligation (2006) |
| Nigeria | 18 years of age for voluntary military service (2007) |
| Niue | void |
| Norfolk Island | void |
| Northern Mariana Islands | void |
| Norway | 18-44 years of age for male compulsory military service; 16 years of age in wartime; 17 years of age for male volunteers; 18 years of age for women; 12-month service obligation, in practice shortened to 8 to 9 months; although all males between ages of 18 and 44 are liable for service, in practice they are seldom called to duty after age 30; reserve obligation to age 35-60; 16 years of age for volunteers to the Home Guard, who serve 6-month duty tours (2006) |
| Oman | 18-30 years of age for voluntary military service; no conscription (2008) |
| Pacific Ocean | void |
| Pakistan | 16 years of age for voluntary military service; soldiers cannot be deployed for combat until age of 18; the Pakistani Air Force and Pakistani Navy have inducted their first female pilots and sailors (2006) |
| Palau | void |
| Panama | void |
| Papua New Guinea | 16 years of age for voluntary military service; no conscription (2008) |
| Paracel Islands | void |
| Paraguay | 18 years of age for compulsory and voluntary military service; conscript service obligation - 12 months for Army, 24 months for Navy (2006) |
| Peru | 18-30 years of age for voluntary male and female military service; no conscription (2008) |
| Philippines | 18-25 years of age (officers 21-29) for compulsory and voluntary military service; applicants must be single male or female Philippine citizens (2007) |
| Pitcairn Islands | void |