Doing What You Know: The United States and 250 Years of Irregular War

The United States has a long history of engaging in irregular wars and countering insurgencies, one that predates its independence. To understand what worked, what did not, and why, this study assesses the measures, both coercive and benign, that the United States has used in a limited number of pivotal cases to determine if U.S. irregular warfare and counterinsurgency (COIN) approaches have changed significantly over the past two centuries. It also makes recommendations for the future.