(DoD, NATO) A security element operating to the flank of a moving or stationary force to protect it from enemy ground observation, direct fire, and surprise attack.
Department of Defense Dictionary of Military and Associated Terms. 31 January 2011.
| APA | Military Dictionary (DoD). (2011). flank guard. Retrieved September 20, 2026, from http://smartdefine.org/flank_guard/definitions/1961740 |
| Chicago | Military Dictionary (DoD). 2011. "flank guard" http://smartdefine.org/flank_guard/definitions/1961740 (accessed September 20, 2026). |
| Harvard | Military Dictionary (DoD) 2011, flank guard, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/flank_guard/definitions/1961740>. |
| MLA | Military Dictionary (DoD). "flank guard" 4 April 2011. Web. 20 September 2026. <http://smartdefine.org/flank_guard/definitions/1961740> |