| Country | Military service age and obligation |
| Ecuador |  20 years of age for selective conscript military service; 12-month service obligation (2008) |
| Egypt | 18-30 years of age for male conscript military service; service obligation 12-36 months, followed by a 9-year reserve obligation (2008) |
| El Salvador | 18 years of age for selective compulsory military service; 16 years of age for voluntary service; 12-month service obligation (2006) |
| Equatorial Guinea | 18 years of age (est.) for compulsory military service (2008) |
| Eritrea | 18-40 years of age for male and female voluntary and compulsory military service; 16-month conscript service obligation (2006) |
| Estonia | compulsory military service for men between 19 and 28; conscription lasts 11 months for junior NCOs and reserve platoon leaders; reserve officers and designated specialists have a different conscript service obligation; Estonia has committed to retaining conscription for men up to 2010 and, unlike Latvia and Lithuania, has no plan to transition to a contract armed forces; 17 years of age for volunteers; reserve commitment up to the age of 60 (2006) |
| Ethiopia | 18 years of age for compulsory and voluntary military service; theoretically, no compulsory military service, but the military can conduct call-ups when necessary and compliance is compulsory (2008) |
| European Union | void |
| Falkland Islands (Islas Malvinas) | void |
| Faroe Islands | void |
| Fiji | 18 years of age for voluntary military service; reserve obligation to age 45 (2006) |
| Finland | 18 years of age for male voluntary and compulsory national military and nonmilitary service; service obligation 6-12 months (2007) |
| France | 17-40 years of age for male or female voluntary military service); no conscription; 12-month service obligation; women serve in noncombat military posts (2005) |
| French Polynesia | void |
| French Southern and Antarctic Lands | void |
| Gabon | 20 years of age for compulsory and voluntary military service (2007) |
| Gambia, The | 18 years of age for voluntary military service; no conscription (2008) |
| Gaza Strip | void |
| Georgia | 18 to 34 years of age for compulsory and voluntary active duty military service; conscript service obligation - 18 months (2005) |
| Germany | 18 years of age (conscripts serve a 9-month tour of compulsory military service) (2004) |
| Ghana | 18 years of age for voluntary military service; no conscription (2008) |
| Gibraltar | void |
| Greece | 18 years of age for compulsory military service; during wartime the law allows for recruitment beginning January of the year of inductee's 18th birthday, thus including 17 year olds; 17 years of age for volunteers; conscript service obligation - 12 months for the Army, Air Force; 15 months for Navy; women are eligible for voluntary military service (2007) |
| Greenland | void |
| Grenada | void |
| Guam | void |
| Guatemala | all male citizens between the ages of 18 and 50 are liable for military service; conscript service obligation varies from 12 to 24 months; women can serve as officers (2007) |
| Guernsey | void |
| Guinea | 18 years of age for compulsory military service; 2-year conscript service obligation (2006) |
| Guinea-Bissau | 18 years of age for selective compulsory military service (2006) |
| Guyana | 18 years of age for voluntary military service; no conscription (2008) |
| Haiti | void |
| Heard Island and McDonald Islands | void |
| Holy See (Vatican City) | void |
| Honduras | 18 years of age for voluntary 2 to 3-year military service (2004) |
| Hong Kong | void |
| Hungary | 18 years of age for voluntary military service; conscription abolished in June 2004; 6-month service obligation, with reserve obligation to age 50 (2006) |
| Iceland | void |
| India | 16 years of age for voluntary military service; no conscription (2008) |
| Indian Ocean | void |
| Indonesia | 18 years of age for selective compulsory and voluntary military service; 2-year conscript service obligation, with reserve obligation to age 45 (2006) |