International Security is America's leading peer-reviewed journal of security affairs.
Modern states recurrently buttress their militaries by recruiting legionnaires—individuals who are neither citizens nor subjects of the governments for which they fight. When facing severe territorial threats, political constraints on domestic recruitment, or both, states lean on legionnaires to balance the competing imperatives of national security and domestic politics. Because states often reach beyond their citizenries to secure combat personnel, legionnaires demonstrate how frequently this central component of national military power is, in fact, international.
Elizabeth M.F. Grasmeder, "Leaning on Legionnaires: Why Modern States Recruit Foreign Soldiers," International Security, Vol. 46, No. 1 (Summer 2021), pp. 147–195, https://doi.org/10.1162/isec_a_00411.
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