Frontier Forts – G Forts
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Gadsden Fort, Alabama – Near Spanish Fort
Gadsden Fort, Florida – On Apalachicola River
Gadsden’s Warf, Fort at South Carolina – At Charleston
Gage Fort, Illinois – Randolph County; now town of that name
Gage Fort, New York – On Lake George
Gaines Fort, Alabama – On Dauphin Island, Mobile Bay, on sight of old Fort Tombigbee
Gaines Fort, D.C. – Defense of Washington
Gaines Fort, Florida – At Gainesville
Gaines Fort, Georgia – On Chattahoochee River, in Clay County; now town of that name
Gains Fort, Minnesota – Crow Wing County; name changed to Fort Ripley
Gaines Fort, New York – At Plattsburg
Gaines Fort, New York – At West Point
Gaines Fort, Pennsylvania – At Philadelphia
Gale Fort, Florida – In Putnam County
Galpin Fort, Montana – At junction of Milk and Missouri Rivers
Galpin Fort, South Carolina – At Silver Bluff on Savannah River, 12 miles below Augusta; also called Fort Dreadnaught
Galpin Battery, Tennessee – Near Knoxville
Galt Camp, Florida – Near Tampa
Gamble Fort, Florida – Thirty miles southeast of Tallahassee
Gamble Camp, Missouri – Near St. Louis
Gansevoort Fort, New York – New York City, at foot of Twelfth and Gansevoort Streets
Garpron Fort, Florida – In Brevard County
Gardenier Camp, Texas – On South Fork of Nueces River
Gardner Fort, Florida – On Kissimmee River, near Cypress Lake
Gardiners Bay Fort at New York – On Long Island Sound
Caresché Camp, Tennessee – At Murfreesboro
Caresché Battery, Virginia – Three miles northwest of Alexandria
Gareys Ferry Ordnance Depot, Florida – On Black Creek in Duval County
Garland Fort, Colorado – On Utah Creek, Costilla County; now town of that name; first called Fort Massachusetts
Garnet Head Battery at Massachusetts – At Plymouth
Garnett Camp, West Virginia – Near Rich Mountain
Garrett Fort, Kentucky – Woodford County; now town of that name
Gasper’s Fort, Tennessee
Gaston Fort, California – In Hoopa Valley
Gaston Fort, North Carolina – At Newbern
Gates Fort, Florida – On St. Johns River, 4 miles south of mouth of Ocklawaha River
Gates Fort, Texas – On Leon River, 5 miles above Coryells Creek
Gatlin Fort, Florida – On Watermelon Lake
Gavock Fort, Tennessee – Fort Donelson; also called Fort McGavock
Gay Fort, West Virginia – In Wayne County; now town of that name
Gayoso, Fort, Missouri – At Gayoso.
Gayoso General Hospital, Tennessee – At Memphis.
Geary Fort, Virginia – At Leesburg; first called Fort Johnston.
George, Fort. Florida – Month of St. Johns River, Dnval County; now town of that name
George Fort, South Dakota – On Missouri River, 20 miles below Pierre.
Georges Battery, Maine – On Georges River.
George (1) Fort, Maine – At Castine.
George, St. (1), Fort, Maine – At Thomaston.
George (2) Fort, Maine – At Pemaquid.
George St. (2), Fort, Maine – On Kennebec River.
George (3) Fort, Maine – At Brunswick.
George Fort, Michigan – On Mackinac Island.
George Fort, New York – At New York City.
George Fort, New York – On Long Island.
George Fort, New York – At Oswego.
George Fort, Oregon – At Astoria.
George Fort, Pennsylvania
George Fort, Rhode Island – On Goat Island, Narragansett Bay.
George Fort, Virginia – At Old Point Comfort.
George Fort, W. Virginia – At Petersburg.
Georgetown, Fortifications at, Maine
Georges Island, Fort on, Massachusetts – Fort Warren.
Georgevski Fort, Alaska – On Kenyon Bay.
Georgian Gulf Reservation, Washington
German Flats Forts on New York – Forts Dayton, Herkimer, and Stanwix.
Germantown, Camp at. Pennsylvania
Gerrishs Island Fort on Maine – Fort Foster.
Getty Camp, Virginia – At Suffolk.
Gettysburg National Cemetery, Pennsylvania – At Gettysburg.
Gibbon Fort, Alaska – At mouth of Tanana River.
Gibbs J. B., General Hospital, Kentucky – At Lexington.
Gibbs Fort, South Carolina
Gibson Cantonment, Arkansas – On Arkansas River.
Gibson Fort, Indian Territory – Cherokee Nation; now town of that name
Gibson Fort, Indian Territory – On Grand River.
Gibson Fort, New York – On Ellis Island.
Gibson Fort, Pennsylvania – At Hestonville, near Philadelphia.
Gila Copper Mines, Post at, New Mexico – Fort McLane.
Gilbert, Fort, Massachusetts – At Brookfield.
Gill Camp, Kentucky – At Olympia Springs.
Gillem Fort, Tennessee – At Nashville.
Gillespie Fort, Florida – Latitude 29° 50′, longitude 82° 15′.
Gillespie Fort, Tennessee – On Holston River.
Gilliland Fort, Florida – At Newnansville
Gillmore Battery, New York – At Fort Hamilton
Gillmore Fort, Virginia – At Chapin’s Farm
Gilman Camp, Georgia – At Americus
Gilmer Fort, Georgia – Okeefinokee Swamp
Gilmer Fort, Virginia – On James River, 4 miles below Richmond
Gilpin Camp, Virginia – At Gloucester Point
Girardeau Fort, Missouri – at Cape Girardeau
Girtys Town Fort, at Ohio – St. Marys River
Gladden Redoubt, Alabama – Near Mobile
Glade Hollow Fort, West Virginia – In Russell County
Glass Redoubt, Alabama – Alabama and Tombigbee Rivers
Glen Camp Battery, Virginia – Near Fort Corcoran
Glendale National Cemetery, Virginia – At Glendale, Henrico County
Gloucester Fort at Massachusetts -Fort Point
Glover Fort, Massachusetts – Marblehead Harbor
Glover Battery, South Carolina – On James River, near Charleston
Glower Fort, Ohio
Goat Island Fort on Rhode Island – Fort Anne, Newport Harbor
Goat Island Fort on South Carolina – On Stono Inlet
Goats Point Battery at Georgia – On Tybee Island
Goddard Camp, Ohio – At Columbus
Godolphin Fort, South Carolina – Same as Fort Galpin
Goings Fort, Illinois – Kaskaskia River
Golphin Fort, Georgia – At Augusta
Good Hope Fort, Connecticut – At Hartford
Good Hope Fort, D.C. – Name changed to Fort Wagner
Good Hope Camp, Maryland – Near the Eastern Branch
Good Hope Fort, Missouri – Near Rolla
Goodrich Camp, Virginia – At Middletown
Good Samaritan General Hospital, Missouri – At St. Louis
Goodwin Fort, Arizona – On Gila River, Pima County
Gorges Fort, Maine – On Hog Island Ledge in Portland Harbor
Gosport Fort, New Hampshire
Gottenburg Fort, Deleware – On Tinicum Island
Governors Bridge Fort at South Carolina – Near Charleston
Governors Island Fort, at Massachusetts – Fort Winthrop
Governors Island Fortifications on New York – Fort Columbus and Castle Williams
Gowanus Bay Redoubts at New York
Gower Fort, Ohio – At Athens
Grafton Fort, Virginia – Four miles from Yorktown
Grafton National Cemetery, West Virginia – At Grafton, Taylor County
Graham Camp, D.C – Four miles north of Washington
Graham Camp, Georgia – On Tybee Island
Graham Fort, Texas – On Brazos River, Hill Comity; now town of that name, 14 miles from Hillsboro.
Graham Fort, Virginia – Near Arlington.
Granby Fort, South Carolina – Near Columbia.
Grand Battery, New York – At Bowling Green.
Grand Gulf, Fortifications at, Mississippi.
Grand Island, Fort near, Nebraska – Fort Kearny:
Grand Portage, Fort at, Minnesota – Fort William.
Grand River Agency Camp at, North Dakota – Ninety miles above Fort Sully.
Grand Terre Island, Forts on, Louisianna – Forts Lafitte and Livingston.
Grand Tower Rock, Reservation, Missouri – In Mississippi River.
Granger General Hospital Alabama – At Huntsville.
Granger Battery, New Jersey – At Fort Hancock.
Granger Fort, Tennessee – On Harpeth River.
Granger Fort, Tennessee – On Holston River.
Grant Fort (new), Arizona – At foot of Mount Graham.
Grant Fort (old), Arizona – At junction of Arivaypa and San Pedro Rivers.
Grant Battery, Georgia – On Tybee Island.
Grant Fort, Mississippi – Defense of Vicksburg.
Grant General Hospital, Ohio – At Cincinnati.
Grant Camp, New York – In New York City.
Grant General Hospital, New York – At Willets Point.
Grant Camp, Virginia – At Richmond.
Grants Island, Reservation, Alabama – In Mobile Bay.
Grant National Park, Camp in, California
Granville, Fort, North Carolina – At Portsmouth.
Granville, Fort, Pennsylvania – On Juniata River, near Lewistown.
Gratlot Fort, Michigan – On St. Clair River, near Port Huron, at outlet of Lake Huron.
Gratlot Grove, Fort at, Wisconsin.
Grattan Fort, Nebraska – At Ash Hollow, in Taylor County, Platte River.
Grave Creek, Fort, West Virginia – In Marshall County.
Gray Fort, North Carolina – Roanoke River, near Plymouth.
Great Battery, Louisianna – At New Orleans.
Great Brewster Island Reservation, Massachusetts – Near Cape Cod.
Great Bridge Fort at Virginia – Nine miles from Norfolk.
Great Diamond Island Batteries on Maine – Batteries Weymouth, Honeycutt, Berry, and Thompson, in Portland Harbor.
Great Gull Island, Fort on, New York – Fort Michie.
Great Hog Island Battery on Maine – In Portland Harbor.
Great Horseshoe Bend Fortified Camp at, Alabama – On Tallapoosa River; called by the Indians “Tohopeka.”
Great Meadow Fort at New Hampshire – At Westmoreland.
Great Ossippee Point, Fort at, New Hampshire – At Great Ossippee Pond.
Great Warsaw Island, Battery on, Georgia – Near Savannah.
Greble Fort, D. C- Two miles South of Giesboro Point.
Greble Camp, Pennsylvania – At Harrisburg.
Greble Fort, Rhode Island – On Dutch Island, Narragansett Bay, near Newport.
Greble Camp, Virginia -At Norfolk.
Green Fort, Florida – DeSoto County, 30 miles east from Tampa Bay; now town of that name
Greene Fort, Georgia – On St. Marys River.
Greene Fort, New York – At Brooklyn.
Greene Battery, Rhode Island – At Fort Adams.
Greene Fort, Rhode Island- Near Newport.
Green Fort, South Carolina -On Folly Island.
Green Bay Fort at, Wisconsin – Fort Howard; also an old fort there built in 1726.
Greenburg Camp, New York – At Tarrytown.
Greenbush Cantonment at, New York
Greenfield Works At, Massachusetts
Greenfield Fort. Tennessee
Green Hill Road Batteries, Rhode Island.
Green Island Battery on, Georgia
Greenleafs Point, Defenses at, D. C- Now Washington Barracks.
Greenville Fort, Ohio. – On Miami River; present site of town by that name
Greenville Fort, Pennsylvania – In Western Pennsylvania.
Greenwood Fort, Mississippi – On Yazoo River, near the bend of the Tallahatchie.
Greenwood Island Reservation, Massachusetts – In Pascagoula Bay.
Gregg Battery, New Jersey – At Fort Mott.
Gregg Battery, South Carolina – At Cummings Point.
Gregg Fort, Virginia – At Petersburg.
Grenadier Battery, New York – At New York City.
Griffin Camp, Virginia – Near Lewinsville.
Grierson Fort, Georgia – At Augusta.
Grierson Camp, Kansas – On the Little Arkansas River.
Grierson Camp, Tennessee – At Memphis.
Griffin Fort, Florida – On Suwanee River, 8 miles from its mouth.
Griffin Fort, Texas – On Clear Fork of Brazos River, Shackelford County; now town of that name; first called Camp Wilson.
Griffith Battery, Maine – At Castine.
Griswold Fort, Connecticut- At New London, on Groton Heights.
Griswold Camp, Virginia – Near Portsmouth.
Griswold Camp, Virginia – Near Suffolk.
Groton Heights Fort at Connecticut – Now Fort Griswold.
Grovers Cliff Fort at Massachusetts- Fort Banks.
Guadalupe River Fort – At Mouth of, Texas
Guejarros Fort, California – At eastern entrance to San Diego Bay.
Guenther Camp, New York – At the Exposition Grounds, Buffalo, 1901.
Gunnison, Fort, Utah- At San Pete.
Gunners Landing Cantonment at, Alabama
Gurnet Point Fort at Massachusetts – Fort Andrew.
Guyon Fort, Louisianna – On Bayou La Fourche.
Gwyns Island Camp on Virginia – In Chesapeake Bay.