| Rank | Country | males | Manpower reaching military service age annually |
| Belize | |  male: 3,580 female: 3,449 (2008 est.) |
| Benin | |  male: 97,543 female: 94,008 (2008 est.) |
| Bermuda | |  male: 426 female: 445 (2008 est.) |
| Bhutan | |  male: 7,847 female: 7,530 (2008 est.) |
| Bolivia | |  male: 107,051 female: 103,620 (2008 est.) |
| Bosnia and Herzegovina | |  male: 30,246 female: 28,189 (2008 est.) |
| Botswana | |  male: 23,007 female: 22,551 (2008 est.) |
| Bouvet Island | | void |
| Brazil | |  male: 1,666,791 female: 1,608,363 (2008 est.) |
| British Indian Ocean Territory | | void |
| British Virgin Islands | |  male: 184 female: 179 (2008 est.) |
| Brunei | |  male: 3,223 female: 3,182 (2008 est.) |
| Bulgaria | |  male: 39,477 female: 37,339 (2008 est.) |
| Burkina Faso | |  male: 176,358 female: 173,856 (2008 est.) |
| Burma | |  male: 423,809 female: 415,843 (2008 est.) |
| Burundi | |  male: 98,105 female: 98,533 (2008 est.) |
| Cambodia | |  male: 185,959 female: 182,558 (2008 est.) |
| Cameroon | |  male: 212,205 female: 207,545 (2008 est.) |
| Canada | |  male: 227,435 female: 215,556 (2008 est.) |
| Cape Verde | |  male: 5,566 female: 5,441 (2008 est.) |
| Cayman Islands | |  male: 336 female: 336 (2008 est.) |
| Central African Republic | |  male: 54,655 female: 54,420 (2008 est.) |
| Chad | |  male: 116,824 female: 117,831 (2008 est.) |
| Chile | |  male: 147,518 female: 141,139 (2008 est.) |
| China | |  male: 10,760,380 female: 9,710,032 (2008 est.) |
| Christmas Island | | void |