Since the Mexican American War, the United States of America has entered numerous wars and conflicts and yet the nation's military leaders still face the same unsolved issues of enforcing law and order post-conflict. Host nation police advisory and security force assistance missions were the tasks assigned to thousands of Soldiers in the United States Army over the previous twelve years of deployments in Iraq and Afghanistan. This research developed from the desire to understand why the United States Army is currently conducting advisory missions post-conflict and whether the United States Army is the best means for conducting police advisory missions. This research analyzes post-WWII Germany, post-Bosnian Conflict of the 1990s, and post-Iraq War of 2003 as case studies to determine if there are descriptive measures that can assist in the next post conflict mission assigned to the U.S. Army.