
ALABAMA
ALASKA
AMERICAN SAMOA
ARIZONA
ARKANSAS
ATLANTIC ISLANDS
CALIFORNIA
COLORADO
CONNECTICUT
DELAWARE
DISTRICT OF COLUMBIA
FLORIDA
GEORGIA
GUAM
GUANTANAMO BAY
HAWAI'I
April 15, 2026: minor revisions and corrections throughout, based on "Pacific Fortress: A History of the Seacoast Defenses of Hawaii", by Glen Williford, 2023.
IDAHO
ILLINOIS
INDIANA
IOWA
KANSAS
KENTUCKY
January 20, 2026: added Cruises Creek Blockhouse, Demossville Blockhouse, Falmouth Blockhouses, Robinson's Bridge Blockhouses, Kimbrough's Bridge Blockhouses, Townsend Creek Blockhouses, Stoner Creek Blockhouses, Fort Robinson, Camp Bourbon, Post at North Benson. Revised Keller's Bridge Stockade, Camp Frazer, Post at Kiser's Station (2), Civil War Defenses of Lexington, Fort at Boonesboro (2), Fort Bramlette.
March 25, 2026: revised Capt. William Hardin's Fort/Station (1).
LOUISIANA
MAINE
MARYLAND
MASSACHUSETTS
MICHIGAN
MINNESOTA
MISSISSIPPI
February 24, 2026: added Fort Henry.
MISSOURI
MONTANA
NEBRASKA
NEVADA
NEW HAMPSHIRE
NEW JERSEY
NEW MEXICO
NEW YORK
March 9, 2026: expanded and revised Fortress West Point.
NORTH CAROLINA
February 27, 2026: added Camp Latimer.
March 25, 2026: added Frederick Grider's Fort, Capt. William Moore's Fort, Capt. William Morrison's Fort, Montford Cove Fort, Major William Davidson's Fort, George Russell Sr.'s Fort, Thomas Waddleton's Fort, Archibald Grant's Fort, Fort Good Hope, Col. Andrew Hampton's Fort, White Oak Fort, Col. John Earle's Fort, Tryon Blockhouse, Mill's Station. Revised Col. Charles McDowell's Station, Capt. John Potts' Fort, Alexander McGaughey's Fort.
NORTH DAKOTA
NORTHERN MARIANA ISLANDS
OHIO
OKLAHOMA
OREGON
PACIFIC ISLANDS
PANAMA CANAL ZONE
PENNSYLVANIA
PHILIPPINES
PUERTO RICO
RHODE ISLAND
SOUTH CAROLINA
March 25, 2026: added Capt. John Hambleton's Blockhouse.
SOUTH DAKOTA
TENNESSEE
March 25, 2026: added Sullivan County Settler Forts, Johnson County Settler Forts, Carter County Settler Forts, Capt. Joseph Wilson's Fort (1), Washington County Settler Forts, Capt. Joseph Hardin's Station, James Crawford's Fort, Hawkins County Settler Forts, Cocke County Settler Forts, Shield's Station (2), Jefferson County Settler Forts, Sevier County Settler Forts, Knox County Settler Forts, Blount County Settler Forts, Holmack's Station, Fort Butler (1), Holman's Blockhouse, Bryant's Fort, Fort Hopson, Post Oak Springs Camp, Chisholm's Fort, Blockhouse on Sugar Creek, Williamson County Settler Forts, Sumner County Settler Forts, Robertson County Settler Forts, Montgomery County Settler Forts, Stewart County Militia Forts, Davidson County Settler Forts. Revised Hickory Cove Fort.
TEXAS
U.S. VIRGIN ISLANDS
UTAH
VERMONT
VIRGINIA
March 27, 2026: revised Richmond Civil War Camps.
WASHINGTON
WEST VIRGINIA
WISCONSIN
WYOMING
ALBERTA
BRITISH COLUMBIA
LABRADOR
MANITOBA
NEW BRUNSWICK
NEWFOUNDLAND
NORTHWEST TERRITORIES
NOVA SCOTIA
NUNAVUT
ONTARIO
PRINCE EDWARD ISLAND
QUÉBEC
SASKATCHEWAN
ST. PIERRE and MIQUELON
YUKON
CENTRAL AMERICA
CUBA
MEXICO
NAVAL SHIPYARDS
AMERICAN SHIPS
CANADIAN SHIPS and SHIPYARDS
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