About this Unit
Marine Barracks, Yokosuka, Japan, was established in 1945 following the end of World War II as part of the U.S. occupation forces in Japan. Its primary mission was to provide security for the U.S. Navy base at Yokosuka, a critical logistical and operational hub in the western Pacific. Over the years, the Marines stationed there conducted ceremonial duties, base security, and supported regional contingency operations during the Korean and Vietnam Wars. The unit was deactivated in 1992 as part of post–Cold War force reductions, with its duties assumed by other security elements at Yokosuka Naval Base.
Historical Facts
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Oldest Continually Manned Marine Post in Japan: Marine Barracks, Yokosuka, established in 1945, is the oldest continually manned U.S. Marine post in Japan.
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Strategic Location: The Barracks are located within the U.S. Fleet Activities Yokosuka, the largest overseas U.S. naval installation, making it a critical hub for regional security.
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Post-WWII Occupation Role: Marines first arrived in Yokosuka shortly after Japan’s surrender in 1945, serving as an occupation force and ensuring base security during the post-war transition.
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Guarding U.S. Seventh Fleet Assets: Marines at Yokosuka provide security for the home port of the U.S. Navy’s Seventh Fleet, including the forward-deployed aircraft carrier USS Ronald Reagan.
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Historic Ceremonies: The Marines at Yokosuka uphold traditions through ceremonial duties, including honor guards for visiting dignitaries and memorial events.
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Training with Japanese Forces: Marines stationed at Yokosuka regularly participate in joint training and community relations activities with the Japan Self-Defense Forces, fostering bilateral ties.
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Earthquake and Disaster Response: The Barracks’ Marines have played crucial roles in natural disaster responses, notably after the 2011 Tōhoku earthquake and tsunami, supporting Operation Tomodachi.
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Home to the “Yokosuka Marines” Basketball Team: The unit once fielded a basketball team that competed in regional tournaments, promoting camaraderie and local goodwill.
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Marine Security Guards: In addition to base security, Marines from Yokosuka sometimes augment security detachments at U.S. embassies and consulates throughout the Asia-Pacific region.
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Community Engagement: Marines at Yokosuka are known for their strong ties with local Japanese communities, participating in volunteer projects, school visits, and cultural exchange events.