Under the Goldwater-Nichols Act of 1986, several changes were instituted by Congress in an effort to reform the U.S. military. Title IV, Joint Officer Management, of the Act was aimed at reforming the officer development of the services in an effort to eliminate the parochial service dispositions that had previously plagued U.S. military efforts. Title IV instituted policies to provide officers with joint education and joint experience in an effort to develop officers with a multi-service or joint perspective. In an effort to provide senior officers with joint experience, all officers promoted to the rank of brigadier general or rear admiral (07) must have completed a joint duty assignment prior to promotion. This dissertation looks specifically at the joint duty promotion requirement instituted under Title IV in an effort to analyze the U.S. military's ability to implement a congressional mandate. The implementation of the joint duty assignment as a promotion requirement has been a source of concern for both the services and congressional policymakers.