The history of military justice and the Uniform Code of Military Justice (UCMJ); the different types of crimes proscribed by Congress in the UCMJ; military jurisdiction; military trial practice and procedure; the service appellate courts; the authority of the military commander under the UCMJ; the military justice system in times of war; courts-martial as contrasted with military commissions; and significant military cases reaching the U.S. Supreme Court and other federal courts.