Security Force Assistance becomes more and more important not only in the post-conflict reconstruction process, but also in a more general way in the foreign policy of the United States. Looking into the experience of both Iraq and Lebanon, this monograph offers useful insights for future military assistance programs and reconstruction efforts. While current assistance programs are certainly of high quality in technical terms, this publication sheds light on the equally important, yet often overlooked social dimension. Elements such as ethnic composition, exclusion of politically compromised personnel, and the armed forces’ image in society will determine the military’s future success just as much as technical training. How to improve these aspects is explained in this analysis.