FM 31-28 FOUO, Special Forces Advanced Urban Combat (1 December 1999), represents a pivotal moment in military history. It was the doctrinal bridge between the ad-hoc counter-terrorism tactics of the pre-9/11 era and the structured, professionalized urban warfare training that Green Berets rely on today. Its "FOUO" marking highlights the delicate balance the military must strike between preparing its forces for battle and protecting those life-saving techniques from public exposure.
: Optimized weapon lengths to maneuver through narrow stairwells and tight doorframes.
Due to its FOUO status, the full, original PDF is not officially released to the public. However, references to its content exist within broader, public-domain Army publications like the Special Forces Operations Manual (FM 3-05.20).
When published in 1999, the manual carried the restriction . This meant that while the information was not "Classified" (such as Secret or Top Secret), it contained sensitive tactical methodologies that the military did not want falling into the hands of potential adversaries. FM 31-28 FOUO, Special Forces Advanced Urban Combat
The most advanced method, involving calculated charges to "create" a door where one doesn't exist. 3. Marksmanship Under Stress
Anecdotal reports from retired SF NCOs indicate that the manual’s “vertical assault” techniques—using ladders and grappling hooks—were directly applied in Fallujah’s periphery.
Accessing a fortified structure requires more than kicking down a door. FM 31-28 categorizes breaching into three distinct methods: : Optimized weapon lengths to maneuver through narrow
The program was launched in the late '90s under the direction of then-Brigadier General Jerry Boykin. His goal was to use this specific training as a "catalyst to raise the Warrior Spirit" and standardize urban combat doctrine across the Special Forces Groups. Inside the Manual: The Three Pillars
Prior to 1999, US urban warfare doctrine was largely a derivative of Cold War mechanized warfare, focusing on large-scale combined arms operations (think tanks and infantry clearing blocks in Eastern Europe). However, the 1990s introduced a new paradigm: Operations Other Than War (OOTW), peacekeeping in the Balkans, and the rise of non-state actors using dense urban terrain as a shield.
Fast-roping and rappelling from buildings or helicopters to access rooftops. 4. Special Equipment & Tools When published in 1999, the manual carried the restriction
FM 31-28 focused on making the operator faster and more lethal than the enemy in a confined space. Unlike conventional Army field manuals (like FM 3-18 which often deal with broader operations), this document honed in on the niche skills of SF teams.
Note: This article summarizes and contextualizes the U.S. Army Field Manual FM 31-28 (marked FOUO) titled Special Forces Advanced Urban Combat, dated 1 December 1999. It does not reproduce the manual verbatim.