word | | Military service age and obligation |
| consent | Mexico | ... 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 ... |
| consent | Papua New Guinea | 16 years of age for voluntary military service (with parental consent); no conscription (2010) |
| consent | Seychelles | 18 years of age for voluntary military service (younger with parental consent); no conscription (2010) |
| consent | Sierra Leone | 17 years 6 months of age for male and female voluntary military service (younger with parental consent); no conscription; candidates must be HIV negative (2009) |
| consent | Tonga | 16 years of age for voluntary enlistment (with parental consent); no conscription (2010) |
| consent | Trinidad and Tobago | 18 years of age for voluntary military service (16 years of age with parental consent); no conscription (2010) |
| consent | Uganda | ... obligation; the government has stated that recruitment under 18 years of age could occur with proper consent and that "no person under the apparent age of 13 years shall be enrolled in ... |
| consent | United Kingdom | 16-33 years of age (officers 17-28) for voluntary military service (with parental consent under 18); women serve in military services, but are excluded from ground combat positions and some naval postings; as ... |
| consent | United States | 18 years of age (17 years of age with parental consent) for male and female voluntary service; maximum enlistment age 42 (Army), 27 (Air Force), 34 (Navy), 28 (Marines); service obligation 8 ... |
| consent | Zambia | ... years of age for male and female voluntary military service (16 years of age with parental consent); no conscription; Zambian citizenship required; mandatory HIV testing upon enlistment; mandatory retirement for officers at ... |
| consription | Mauritania | 18 years of age for obligatory consription of all males; conscript service obligation - 2 years; majority of servicemen believed to be volunteers; service in Air Force and Navy is voluntary (2011) |
| contract | Mongolia | ... 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 |