Military psychiatry covers special aspects of psychiatry and mental disorders within the military context. The aim of military psychiatry is to keep as many serving personnel as possible fit for duty and to treat those disabled by psychiatric conditions. Military psychiatry encompasses counseling individuals and families on a variety of life issues, often from the standpoint of life strategy counseling, as well as counseling for mental health issues, substance abuse prevention and substance abuse treatment; and where called for, medical treatment for biologically based mental illness, among other elements.