Enlistment is the act of joining the army, navy, marines, or air force. Canadians seek enlistment in the US Marines because they don't see as much opportunity in the Canadian armed forces
{i} act of enlisting persons for military service; act of signing up for military service
Enlistment is the period of time for which someone is a member of one of the armed forces. At the end of my term of enlistment I decided to return to civilian life. = service