US Army TRADOC G2 Handbook No. 1: A Military Guide to Terrorism in the Twenty-First Century [open pdf - 5MB]
"This informational handbook supports institutional training, professional military education, and operational missions for U.S. military forces in the War on Terrorism (WOT). This document provides an introduction to the nature of terrorism and recognition of terrorist threats to U.S. military forces. A common situational awareness by U.S. military forces considers three principal venues for armed forces: forces that are deployed, forces that are in transit to or from an operational mission, and forces that are primarily installation or institution support. Compiled from open source materials, this handbook promotes a 'Threats' perspective and enemy situational awareness of U.S. strategies and operations in combating terrorism. Neither a counterterrorism directive nor antiterrorism manual, this handbook complements but does not replace Army training and intelligence products on terrorism."
Lessons Learned Information Sharing (LLIS)