Saudi Arabian-led intervention in Yemen During operation Decisive Storm, multiple sources reported that Latin American military contractors from Academi headed by Erik Prince were hired by UAE Armed Forces to assist in the fight against Houthis. Notable mercenaries See also Dutch Blue Guards Filibuster (military) Freelancer Independent contractor International Stability Operations Association Law of war Mercenaries in popular culture Mercenary Soldiers' Revolt in Brazil Mercenary War ( BC) – also called the Libyan War and the Truceless War Montreux Document Personal Security Detachment Private defense agency Private intelligence agency Privateer Rōnin Special forces Special operations Military volunteer List of foreign volunteers Violent non-state actor References Sources Bernales-Ballesteros, Enrique; UNHCHR: Special Rapporteur of the Commission on Human Rights on use of mercenaries Bodin J; Les Suisses au Service de la France; Editions Albion Michael, 1988. Chartrand, Rene; Louis XV's Army – Foreign Infantry; Osprey 1997. Chartrand, Rene; Spanish Army of the Napoleonic Wars 1793–1808; Osprey 1998. Milliard, Todd S.; Overcoming post-colonial myopia: A call to recognize and regulate private military companies (PDF), in Military Law Review Vol 173, June 2003. At the time of publication Major Milliard was a Judge Advocate in the United States Army Judge Advocate General's Corps Anthony Mockler, Storia dei mercenari: Da Senofonte all'Iraq. Odoya, 2012. . Further reading Historical Atwood, Rodney. The Hessians: Mercenaries from Hessen-Kassel in the American Revolution (Cambridge University Press, 1980). Avant, Deborah. "From mercenary to citizen armies: Explaining change in the practice of war." International Organization (2000): 41–72. online Fetter, Frank Whitson. “Who Were the Foreign Mercenaries of the Declaration of Independence?” Pennsylvania Magazine of History and Biography, vol. 104, no. 4, 1980, pp. 508–513. online Ingrao, Charles. "" Barbarous Strangers": Hessian State and Society during the American Revolution." American Historical Review 87.4 (1982): 954–976 online Ingrao, Charles W. The Hessian mercenary state: ideas, institutions, and reform under Frederick II, 1760–1785 (Cambridge University Press, 2003). Niccolò Machiavelli. The Prince. 1532. Ch. 12. "Military science in western Europe in the sixteenth century." Prologue: The nature of armies in the 16th century Mockler, Anthony. The Mercenaries: The Men Who Fight for Profit – from the Free Companies of Feudal France to the White Adventurers in the Congo. Macmillan, 1969. Percy, Sarah. Mercenaries: The history of a norm in international relations (Oxford University Press, 2007). Schmidt, H. D. "The Hessian Mercenaries: The Career of a Political Cliché." History 43.149 (1958): 207–212 online Thomson, Janice E.