It has long been predicted that counterinsurgency will be the predominant style of American warfare in the 21st century: Thus far, the prediction has proven true. Written for those who study counterinsurgency from a policy perspective as well as for those who do counterinsurgency in the field, this book demonstrates that the U.S. has had difficulty meeting the challenges of this special form of warfare because it has not properly processed important lessons from the past. Based on the author's wartime experiences, a broad range of topics are covered--from factors to be considered in accepting a counterinsurgency partner to "rules" for advisors in the field--with points illustrated by real-life examples.