Fog of war

The fog of war (German: Nebel des Krieges) is the uncertainty in situational awareness experienced by participants in military operations.^[1] The term seeks to capture the uncertainty regarding one's own capability, adversary capability, and adversary intent during an engagement, operation, or campaign. Military forces try to reduce the fog of war through military intelligence and friendly force tracking systems.

The term has become commonly used to define uncertainty mechanics in wargames.