The U.S. has one of the largest militaries in the world. To accomplish its mission, the Department of Defense operates bases where military personnel can be trained and housed until deployed. In total, the DOD counts 3.4 million service members and civilian personnel stationed in more than 4,800 sites in 16 countries across the globe.
Many of the longest-operating military installations stand on U.S. soil and date back to our earliest conflicts – the Revolutionary War and Civil War.
To identify America’s oldest military bases, 24/7 Wall St. reviewed and independently verified the history of active military installations listed on MilitaryBases.com. Bases were ranked by the year in which they opened, according to MilitaryBases.com. The number of active-duty service members assigned to each base came from the 2019 Demographics Report, compiled by Defense Department contractor Military OneSource, the most recent year for which there is base-specific personnel data. We also included which military branch operates each base. Installations outside the 50 states were not considered.
Still in operation today, Carlisle Barracks Army Base in Pennsylvania became a U.S. installation in 1776. Yet its history dates back further than the Revolutionary War. The British used the same site as a military outpost during the French and Indian War in 1757.
When the Revolutionary War broke out, the Continental Congress established an ordinance center at what was then called Washingtonburg. The base was briefly captured by Confederate soldiers during the Civil War and was used as a military hospital during World War I. Since 1951, the post has housed the Army War College, where military members are trained. (See the 14 guns that helped fight the Revolutionary War.)
The second oldest is West Point. Although it did not formally become U.S. property until 1790, West Point had been occupied by Continental Army troops since 1778, and was George Washington’s headquarters in 1779. It was almost taken over by the British in 1780 when the post’s then-commander Benedict Arnold famously betrayed the country. But his treason was uncovered and the base remained in Continental Army hands. Today, it serves as the Army premier training school for young officers. (Find where Benedict Arnold ranks among the most notorious cases of betrayal in U.S. history.)
Click here to see the oldest military bases in America.
27. Offutt Air Force Base
> Location: Bellevue, Nebraska
> Year opened: 1891
> Total active duty personnel: 14,379
> Military branch: Air Force
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26. Naval Station Newport
> Location: Newport, Rhode Island
> Year opened: 1883
> Total active duty personnel: 7,191
> Military branch: Navy
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25. Picatinny Arsenal Army Base
> Location: Morris County, New Jersey
> Year opened: 1880
> Total active duty personnel: 450
> Military branch: Army
24. Fort Huachuca Army Base
> Location: Cochise, Arizona
> Year opened: 1877
> Total active duty personnel: 9,302
> Military branch: Army
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23. Fort Sam Houston Army Base
> Location: San Antonio, Texas
> Year opened: 1876
> Total active duty personnel: 25,655
> Military branch: Army
22. Fort Sill Army Base
> Location: Lawton, Oklahoma
> Year opened: 1869
> Total active duty personnel: 26,189
> Military branch: Army
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21. Naval Submarine Base New London
> Location: Groton, Connecticut
> Year opened: 1868
> Total active duty personnel: 13,856
> Military branch: Navy
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20. Francis E Warren Air Force Base
> Location: Cheyenne, Wyoming
> Year opened: 1867
> Total active duty personnel: 6,716
> Military branch: Air Force
19. Fort Myer Army Base
> Location: Arlington, Virginia
> Year opened: 1863
> Total active duty personnel: 4,783
> Military branch: Army
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18. Rock Island Arsenal Army Base
> Location: Arsenal Island, Illinois
> Year opened: 1862
> Total active duty personnel: 1,291
> Military branch: Army
17. MCRD Parris Island Marine Corps Base
> Location: Port Royal, South Carolina
> Year opened: 1861
> Total active duty personnel: 10,248
> Military branch: Marine Corps
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16. Fort Riley Army Base
> Location: Riley, Kansas
> Year opened: 1853
> Total active duty personnel: 33,295
> Military branch: Army
15. Yuma Proving Ground Army Base
> Location: Yuma County, Arizona
> Year opened: 1850
> Total active duty personnel: 451
> Military branch: Army
14. Fort Bliss Army Base
> Location: El Paso, Texas
> Year opened: 1849
> Total active duty personnel: 60,307
> Military branch: Army
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13. Presidio of Monterey Army Base
> Location: Monterey, California
> Year opened: 1846
> Total active duty personnel: 7,022
> Military branch: Army
12. Naval Academy Navy Base
> Location: Annapolis, Maryland
> Year opened: 1845
> Total active duty personnel: 3,365
> Military branch: Navy
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11. Fort Hamilton Army Base
> Location: Brooklyn, New York
> Year opened: 1831
> Total active duty personnel: 645
> Military branch: Army
10. Naval Medical Center Portsmouth
> Location: Portsmouth, Virginia
> Year opened: 1830
> Total active duty personnel: 7,192
> Military branch: Navy
9. Fort Leavenworth Army Base
> Location: Leavenworth, Kansas
> Year opened: 1827
> Total active duty personnel: 10,908
> Military branch: Army
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8. Naval Hospital Pensacola
> Location: Pensacola, Florida
> Year opened: 1826
> Total active duty personnel: 1,656
> Military branch: Navy
7. Pensacola Naval Air Station
> Location: Pensacola, Florida
> Year opened: 1826
> Total active duty personnel: 15,107
> Military branch: Navy
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6. Key West Naval Air Station
> Location: Key West, Florida
> Year opened: 1823
> Total active duty personnel: 1,783
> Military branch: Navy
5. Watervliet Arsenal Army Base
> Location: Watervliet, New York
> Year opened: 1813
> Total active duty personnel: 387
> Military branch: Army
4. Portsmouth Shipyard Navy Base
> Location: Portsmouth, New Hampshire
> Year opened: 1800
> Total active duty personnel: 2,064
> Military branch: Navy
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3. Norfolk Naval Shipyard Navy Base
> Location: Portsmouth, Virginia
> Year opened: 1794
> Total active duty personnel: 1,721
> Military branch: Navy
2. US Military Academy Army Base West Point
> Location: West Point, New York
> Year opened: 1790
> Total active duty personnel: 4,417
> Military branch: Army
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1. Carlisle Barracks Army Base
> Location: Carlisle, Pennsylvania
> Year opened: 1776
> Total active duty personnel: 1,903
> Military branch: Army
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