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Military deception

Military deception (MILDEC) is an attempt by a military unit to gain an advantage during warfare by misleading adversary decision makers into taking action or inaction that creates favorable conditions for the deceiving force.[1][2] This is usually achieved by creating or amplifying an artificial fog of war via psychological operations, information warfare, visual deception, or other methods.[3] As a form of disinformation, it overlaps with psychological warfare.[4] Military deception is also closely connected to operations security (OPSEC) in that OPSEC attempts to conceal from the adversary critical information about an organization's capabilities, activities, limitations, and intentions, or provide a plausible alternate explanation for the details the adversary can observe, while deception reveals false information in an effort to mislead the adversary.[5]

"Surprise attack" redirects here. For other uses, see Surprise Attack.

Deception in warfare dates back to early history.[6] The Art of War, an ancient Chinese military treatise, emphasizes the importance of deception as a way for outnumbered forces to defeat larger adversaries.[7] Examples of deception in warfare can be found in ancient Egypt,[8] Greece,[9] and Rome,[10] the Medieval Age,[11] the Renaissance,[12] and the European Colonial Era.[13] Deception was employed during World War I and came into even greater prominence during World War II.[14] In modern times, the militaries of several nations have evolved deception tactics, techniques and procedures into fully fledged doctrine.[15][16][17]

Definition[edit]

Many standard military activities can be considered deceptive, but not deception. For example, a unit may move into an assembly area to complete organizing and rehearsing prior to a mission. It is a standard deceptive tactic to camouflage the vehicles, equipment and personnel in the assembly area with the intent of confusing the enemy.[18] Military deception is more complex than simple deceptive activities, with a unit deliberately planning and carrying out an elaborate effort that will cause a targeted adversary decision maker to take an action that is detrimental to the adversary and beneficial to the side employing deception.[19]

Legality[edit]

Adherents to Protocol I (1977) of the Geneva Conventions agree not to engage in acts of perfidy during the conduct of warfare. Perfidious conduct is a deceitful action in which one side promises to act in good faith with the intention of breaking that promise to gain an advantage. Examples include one side raising a flag of truce to entice an enemy to come into the open and take them as prisoners of war, then opening fire on the uncovered adversary. Additional examples include misusing protected signs and symbols, such as the red cross, crescent, and crystal, to conceal weapons and ammunition by making them appear to be a medical facility.[29]

Planning process[edit]

The doctrine for planning deception has been codified over time. In the U.S. military, this doctrine begins with understanding the deception target's cognitive process. Expressed as "See-Think-Do", this understanding of the adversary considers what information has to be conveyed to the target through what medium for the target to develop the perception of the situation that will cause the enemy to take an action beneficial to the friendly side. In the planning process, "See-Think-Do" is considered in reverse order—what does the friendly side want the enemy to do as a result of the deception, what perceptions will the target have to form to take the action, and what information needs to be transmitted to the target through which medium so that the target will develop the desired perception.[39]


As an example, the intent for Operation Bodyguard was for Germany to allocate forces away from Normandy ("Do"). The perception the Allies wanted to create in the mind of the deception target (Hitler) was that the Allies were planning to invade at Calais ("Think"). The information the Allies conveyed to the target to create the perception included the false radio traffic, dummy equipment displays, and deceptive command messages of the fictional First United States Army Group ("See").[40]

Opinions[edit]

Opinions vary among military strategists and authors as to the value of military deception. For example, the two books on warfare usually considered the most famous classics, Sun Tzu's The Art of War and Clausewitz's On War have diametrically opposed views.[177] Sun Tzu emphasizes military deception and considers it the key to victory.[b] Clausewitz argues that the fog of war prevents a commander from having a clear understanding of the operating environment,[178] so creating some sort of false appearance, particularly on a large scale, is unlikely to be meaningful. Because of the cost and effort, Clausewitz argues that from a cost-benefit analysis, a large deception is an acceptable part of a course of action only under special circumstances.[179][180]

Media related to Military deception at Wikimedia Commons

. New York: History Channel. 1998. Archived from the original on 21 December 2021. Retrieved 29 May 2021 – via YouTube.

Sworn to Secrecy: Secrets of War; Season 1, Episode 9, Tools of Deception

. New York: History Channel. 2001. Archived from the original on 21 December 2021. Retrieved 29 May 2021 – via YouTube.

Sworn to Secrecy: Secrets of War; Season 4, Episode 2, Battlefield Deceptions