Focuses on the organization and methods of unconventional warfare in enemy-controlled territory.
While obsolete for modern military doctrine (it has been replaced by modern Special Forces manuals like FM 3-05), is highly sought after by:
FM 31-28 was the U.S. Army’s primary guide for conducting military operations in temperatures ranging from -60°F to +32°F. It covered tactics, techniques, and procedures for units operating in snow, ice, and frozen terrain where standard equipment and tactics fail.