Veterans are vulnerable to develop complex forms of addictive disorders characterized by the presence of traumatic brain injury and psychiatric conditions such as post-traumatic stress disorder and mood disturbances. Alcohol use disorders are frequently observed among veterans and exert a detrimental effect on community reintegration after deployment. Attending to this veteran health problem, the VA is devoting extraordinary efforts to develop adequate treatment strategies. In this study we will evaluate treatment outcomes and identify specific factors that influence alcohol use disorders treatment response in a VA Intensive Outpatient Program offering rehabilitation treatment to the growing number of veterans with alcohol use disorders. Cooperation between researchers and clinical staff will allow optimizing treatment strategies that enhance the recovery of veterans with alcohol use disorders.