About this Unit
Marine Detachment Leavenworth was a United States Marine Corps unit stationed at the United States Disciplinary Barracks in Fort Leavenworth, Kansas. Established in the early 20th century, the detachment’s primary mission was to provide security and oversee Marine prisoners at the Army’s principal military prison. Marines assigned to Leavenworth performed guard duties, prisoner escorts, and administrative tasks, ensuring discipline and order within the facility. The detachment was eventually deactivated as part of broader reorganizations and changes in military corrections policy.
Historical Facts
• Historic Roots: Marine Detachment Leavenworth was established in 1880 at the United States Disciplinary Barracks, Fort Leavenworth, Kansas, making it one of the oldest Marine detachments assigned to an Army post.
• Guarding Military Prisoners: The primary mission of the Marine Detachment was to provide security for the United States Disciplinary Barracks, the Department of Defense's only maximum-security military prison.
• Unique Army-Marine Relationship: Unlike most Marine detachments that serve on Navy ships or facilities, Leavenworth Marines operated on an Army post, fostering a unique inter-service working relationship.
• Famous Prisoners: Over the years, Marines at Leavenworth guarded many notable inmates, including military personnel convicted of high-profile crimes during both World Wars and later conflicts.
• Distinct Uniforms: Marines stationed at Leavenworth wore their traditional dress blues, standing out among the Army personnel and becoming a familiar sight in the area.
• Legend of the “Rock Crusher”: An often-repeated story claims that early prisoners at Leavenworth, guarded by the Marines, were forced to break rocks as punishment, earning the prison the nickname "The Rock Crusher."
• Drill and Ceremony: The Marine Detachment was renowned for its sharp drill routines and military discipline, often participating in parades and ceremonies on the post, impressing both Army and civilian observers.
• World War II Expansion: During World War II, the population of the Disciplinary Barracks swelled, and the Marine Detachment was expanded to meet the increased security needs.
• Disbandment: The Marine Detachment at Leavenworth was officially disbanded in 1966, as the Marine Corps restructured its personnel assignments and the mission was assumed by Army Military Police.
• Enduring Legacy: Despite its disbandment, the legacy of Marine Detachment Leavenworth lives on in Marine Corps lore, as a testament to the Corps' adaptability and service in unique billets throughout U.S. military history.
