The IPB process helps commanders to:

This field manual is a fascinating piece of Cold War history. Unlike modern manuals that focus on technical specifications, FM 31-28 was designed to train U.S. soldiers on how to fight guerrilla wars.

Because many 31-series manuals contain historical tactical data, they are widely archived by academic and military institutions. You can find authenticated copies through:

It specifically deals with operations. During this era, the U.S. Army used a fictional enemy force known as "Aggressor" (complete with their own fictional language and currency) to simulate realistic combat scenarios. FM 31-28 outlines how this fictional enemy would organize insurgencies, conduct guerrilla warfare, and undermine established governments.

FM 31-28 is a US Army Field Manual that focuses on "Military Intelligence, Intelligence Preparation of the Battlefield" (now superseded by newer publications). Here are some key points:

Their United States Army Field Manuals Inventory provides a comprehensive list of the 31-series and where to find them.

While obsolete for modern military doctrine (it has been replaced by modern Special Forces manuals like FM 3-05), is highly sought after by:

Here is informative content regarding this specific manual: