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Military service is service by an individual or group in an army or other militia, air forces, and naval forces, whether as a chosen job (volunteer) or as a result of an involuntary draft (conscription). Nations which conscript for military service typically also rely on citizens choosing to join the armed forces as a career. Some nations with armed forces do not conscript their personnel (e.g. most NATO and European Union states). Instead, they promote military careers to attract and select recruits; see military recruitment.