What is the meaning of OP?

(Military) OP stands for one of the following: observation post; operational publication (USN); ordnance publication
Department of Defense Dictionary of Military and Associated Terms. 31 January 2011.
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APAMilitary Dictionary (DoD). (2011). op. Retrieved September 21, 2026, from http://smartdefine.org/op/definitions/1958089
ChicagoMilitary Dictionary (DoD). 2011. "op" http://smartdefine.org/op/definitions/1958089 (accessed September 21, 2026).
HarvardMilitary Dictionary (DoD) 2011, op, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/op/definitions/1958089>.
MLAMilitary Dictionary (DoD). "op" 4 April 2011. Web. 21 September 2026. <http://smartdefine.org/op/definitions/1958089>