Manpower
From OMGWiki
Manpower, either an abstract term for human labor effort or the number of human productive units available/needed for professional or other tasks, also used when referring to such personnel as a resource (e.g. "a manpower shortage").
During World War Two there were two ways nations accessed their manpower pools, through conscription (America). or though a standing army (Germany & Britain).
Conscription
Conscription (also known as "The Draft", the "Call-up" or "National service") is a general term for involuntary labor demanded by an established authority. It is most often used in the specific sense of government policies that require citizens to serve in the armed forces. It is known by various names. For example, the most recent conscription program in the United States was known colloquially as "the draft". Many nations do not maintain conscription forces, instead relying on a volunteer or professional military most of the time, although many of these countries still reserve the possibility of conscription for wartime and during times of crises.
Standing Army
A standing army is an army composed of full-time career soldiers who 'stand over', in other words, who do not disband during times of peace. They differ from army reserves who are activated only during such times as war or natural disasters. Standing armies tend to be better equipped, better trained, and better prepared for emergencies, defensive deterrence and particularly wars.
