The United States Disciplinary Barracks is a military correctional facility located on Fort Leavenworth, a United States Army post in Kansas.It is one of three major prisons built on Fort Leavenworth property, the others being the federal United States Penitentiary, Leavenworth, four miles to the south, and the military Midwest Joint Regional Correctional Facility, which opened on 5 October 2010.It reports to the United States Army Corrections Command and its commandant usually holds the rank of colonel.The USDB is the U.S. military's only maximum-security facility that houses male service members convicted at court-martial for violations of the Uniform Code of Military Justice. Only enlisted prisoners with sentences over ten years, commissioned officers, and prisoners convicted of offenses related to national security are confined to the USDB. Enlisted prisoners with sentences under ten years are confined in smaller facilities, such as the nearby Midwest Joint Regional Correctional Facility or the Naval Consolidated Brig at Chesapeake, Virginia. Corrections personnel at the facility are Army Corrections Specialists trained at the U.S. Army Military Police school located at Fort Leonard Wood, Missouri, as well as Marine and Air Force corrections personnel.