word | | Military service age and obligation |
| conscription | Bahrain | 17 years of age for voluntary military service; 15 years of age for NCOs, technicians, and cadets; no conscription (2008) |
| conscription | Bangladesh | 16 years of age for voluntary military service; 17 years of age for officers (both with parental consent); conscription legally possible in emergency, but has never been implemented (2008) |
| conscription | Barbados | 18 years of age for voluntary military service (younger requires parental consent); no conscription (2008) |
| conscription | Belgium | 18 years of age for voluntary military service; conscription suspended (2008) |
| conscription | Belize | 18 years of age for voluntary military service; laws allow for conscription only if volunteers are insufficient; conscription has never been implemented; volunteers typically outnumber available positions by 3:1 (2008) |
| conscription | Bermuda | 18-23 years of age; eligible men required to register for conscription as needed into the Bermuda Regiment, which is largely voluntary; term of service 39 months (2007) |
| conscription | Bhutan | 18 years of age for voluntary military service; no conscription (2008) |
| conscription | Bolivia | ... 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 years of age for voluntary premilitary service, provides ... |
| conscription | Bosnia and Herzegovina | 18 years of age for voluntary military service; conscription abolished January 2006; 4-month service obligation (2009) |
| conscription | Bulgaria | ... 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 professional at the end of ... |
| conscription | Burma | 18 years of age for voluntary military service for both sexes; forced conscription of children, although officially prohibited, reportedly continues (2007) |
| conscription | Cambodia | conscription law of October 2006 requires all males between 18-30 to register for military service; 18-month service obligation (2006) |