word | | Military service age and obligation |
| age | Bhutan | 18 years of age for voluntary military service; no conscription (2008) |
| age | Bolivia | 18-49 years of age for 12-month compulsory military service; when annual number of volunteers falls short of goal, compulsory recruitment is effected, including conscription of boys as young as 14; 15-19 ... |
| age | Bosnia and Herzegovina | 18 years of age for voluntary military service; conscription abolished January 2006; 4-month service obligation (2009) |
| age | Botswana | 18 is the apparent age of voluntary military service; the official qualifications for determining minimum age are unknown (2001) |
| age | Brazil | 21-45 years of age for compulsory military service; conscript service obligation - 9 to 12 months; 17-45 years of age for voluntary service; an increasing percentage of the ranks are "long-service" volunteer ... |
| age | Brunei | 18 years of age (est.) for voluntary military service; non-Malays are ineligible to serve (2007) |
| age | Bulgaria | 18-27 years of age for voluntary military service; as of May 2006, 67% of the Bulgarian Army comprised of professional soldiers; conscription ended January 2008; Air Forces and Naval Forces became fully ... |
| age | Burkina Faso | 18 years of age for voluntary military service; women may serve in supporting roles (2009) |
| age | Burma | 18 years of age for voluntary military service for both sexes; forced conscription of children, although officially prohibited, reportedly continues (2007) |
| age | Burundi | 16 years of age for compulsory and voluntary military service; children as young as 10 years of age have been conscripted into the armed forces; the enrollment of children is still not ... |
| age | Cameroon | 18 years of age for voluntary military service; no conscription; the government makes periodic calls for volunteers (2006) |
| age | Canada | 17 years of age for male and female voluntary military service (with parental consent); 16 years of age for reserve and military college applicants; Canadian citizenship or permanent residence status required; maximum ... |