They recruit. At my high school, local army, navy, etc. recruiters will sit outside our cafeteria during lunch talking to people and telling them more about the military.
All men
According to the CIA World Factbook, there are approximately 12,000,000 men age 16-49 that are fit for military service in the UK.
Required men to register with the govt. for a draft, in order to be randomly selected for military service. May, 1917
Because the men has to do military service
Veterans.
No, every man must serve his country in one of the two ways: by going through military training or, alternatively, by doing "civilian service". Most men do the about a half a year long military service. Civilian service lasts for a year, during which you must work at a state- or county-owned working place such as a hospital or a school.
Men and women alike can join the Norwegian Military. However, the Norwegian Military does have a mandatory military service for men which has been described as being weak.
By making military training a part of a college education.
There lines of hungry and unemployed men trying to get into the service. But the service was full up.
Draft men to serve in the military
Probably 300,000
minutemen