By the late 1990s, global demographic shifts made it clear that future military conflicts would increasingly transition from open fields and jungles into dense megalopolises. Conventional military operations in urban terrain (MOUT) relied heavily on overwhelming firepower and massive structural destruction.

Training soldiers to bring their weapons from a compressed ready position to an accurate shot in fractions of a second.

: Specific procedures for identifying and neutralizing immediate threats while ignoring eliminated targets.

The designation is critical to understanding the nature of this document.

FM 31-28 had a relatively short life as a standalone document. In the early 2000s, as part of a massive Army-wide doctrinal renumbering, it was superseded. The document that exists today as the primary source for this subject is .

[ Doorway / Breach Point ] | +--------v--------+ | (2) (1)| <-- Points of Domination (Corners) | | | [Room] | | | | (3) (4)| <-- Secondary Team Positions +-----------------+ 3. Advanced Breaching Methods

By the late 1990s, the U.S. military recognized a massive strategic shift. Global demographics showed rapid urbanization, and future conflicts were moving away from open fields and jungles into dense, concrete cityscapes.

The For Official Use Only (FOUO) protective marking applied to the December 1999 PDF version highlighted the sensitive nature of the tactics detailed within. While not classified as Secret or Top Secret, FOUO status prevented the public distribution of operational security (OPSEC) secrets.

Advanced techniques for clearing rooms, buildings, and stairwells with speed, surprise, and violence of action.

FM 31-28 (FOUO) Special Forces Advanced Urban Combat (1 December 1999): A Retrospective