In August 2005, the United States Army Training and Doctrine Command, Assistant Deputy Chief of Staff for Intelligence-Threats released the Military Guide to Terrorism in the Twenty-First Century. The Guide was designed primarily for US military forces, however, other applicable groups such as state and local first responders can benefit from the information contained in the Guide. While primarily written to support operational missions, institutional training, and professional military education for US military forces in the Global War on Terrorism (GWOT), US domestic first responders will also find the Guide beneficial.
According to the Guide, understanding terrorism spans foreign and domestic threats of nation-states, rogue states with international or transnational agent demonstrations, and actors with specific strategies, tactics, and targets. A central aspect of this terrorism guide comprises foreign and domestic threats against the United States of America in a contemporary operational environment (COE).
The Guide provides information on the nature of terrorism, terrorist groups and terrorist method of operations. Complied from open source materials, the Guide includes a main handbook and four supplemental readers: