What is the meaning of OOS?

(Military) OOS stands for out of service
Department of Defense Dictionary of Military and Associated Terms. 31 January 2011.
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APAMilitary Dictionary (DoD). (2011). oos. Retrieved September 25, 2026, from http://smartdefine.org/oos/definitions/1958088
ChicagoMilitary Dictionary (DoD). 2011. "oos" http://smartdefine.org/oos/definitions/1958088 (accessed September 25, 2026).
HarvardMilitary Dictionary (DoD) 2011, oos, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/oos/definitions/1958088>.
MLAMilitary Dictionary (DoD). "oos" 4 April 2011. Web. 25 September 2026. <http://smartdefine.org/oos/definitions/1958088>