What is the meaning of control group?

(DoD) Personnel, ships, and craft designated to control the waterborne ship-to-shore movement.
Department of Defense Dictionary of Military and Associated Terms. 31 January 2011.
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APAMilitary Dictionary (DoD). (2011). control group. Retrieved September 20, 2026, from http://smartdefine.org/control_group/definitions/1961039
ChicagoMilitary Dictionary (DoD). 2011. "control group" http://smartdefine.org/control_group/definitions/1961039 (accessed September 20, 2026).
HarvardMilitary Dictionary (DoD) 2011, control group, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/control_group/definitions/1961039>.
MLAMilitary Dictionary (DoD). "control group" 4 April 2011. Web. 20 September 2026. <http://smartdefine.org/control_group/definitions/1961039>