## Deception in Military Doctrine Before and After
The 23rd Headquarters Special Troops did not operate in a doctrinal vacuum. Military deception had a history that stretched back through the entire history of organized warfare, and the unit’s founders drew on whatever precedents were available as they designed the organization and its methods.
The British experience in both World Wars was particularly relevant. During World War I, the British had developed systematic programs for visual camouflage and deception that influenced subsequent doctrine. During World War II, British deception operations in the Middle East theater — which included Operation Bertram before El Alamein, as well as the work of the London Controlling Section coordinating strategic deception — provided an institutional model that American planners could study.
The most famous strategic deception of the European theater, Operation Fortitude, was a British-led effort that used fake army groups (including FUSAG, the First United States Army Group) to suggest that the main D-Day landing would come at Pas-de-Calais rather than Normandy. Fortitude operated at a level far above the 23rd’s tactical theater deception — it involved intelligence fabrication, turned agents, false communications at army group level, and the use of George Patton as a notional commander to give the fake army credibility. The 23rd’s work was complementary to this strategic framework but different in kind: tactical, operational, mobile, and focused on the specific objective of protecting a real unit’s real movement rather than creating a strategic-level deception affecting entire army group dispositions.
Operation Mincemeat, the British plan to pass false documents suggesting an Allied landing in Greece and Sardinia rather than Sicily, was different again: an intelligence operation rather than a military deception in the 23rd’s sense, relying on a single dramatic event (a corpse carrying false documents) rather than sustained multi-element operational theater activity.