Fort Failing was built in 1776, during the Revolutionary War a mile west of Canajoharie, in Montgomery County, New York. Fort Failing was a fortified stone house that stood for decades, until it burned down in 1833.

Farmingdale Nike Base (NY-24), 1957-74, Nassau County, Farmingdale. Integrated Fire Control Area for Launcher area in Amityville. Inactivated 1974. Site deactivated but buildings left, now a NYARNG Training site and OMS. For more information see alpha.fdu.edu/~bender/NY24.html

Battery Fergusson was a coastal gun battery built in Queens County, as part of Fort Tilden during the first World War. Originally, the structure was known as the “East Battery” but was renamed in 1939 in honor of Brigadier General Frank K. Fergusson. Construction of the battery began in February of 1917 and was completed by May of that year. In 1942, the battery was deactivated after more than two and a half decades of operation.

Fort Fireman, 1812, Kings County, Brooklyn. Possibly on the site of Fort Box (1776) on Bergen's Hill.

Fort Fish, located in what is now Central Park, in New York City, was built in 1814. The construction featured various earthworks, and was used during the war of 1812, but was promptly abandoned after just one year of operation in 1815. Fort Fish was part of a larger defensive formation consisting of two other forts in Manhattan: Fort Laight to its north, and Halletts point Tower to its south. Fort Fish was the largest, and most heavily defended of the three fortifications.

Camp Fisher’s Island was a World War One era training station, used by the forces of the United States Army. The camp was named after Major General Charles D. Fisher, who was formerly the army’s Chief of Ordnance. The station was used to train and mobilize American forces during both world wars. Camp Fisher’s Island also hosted the Long Island Coast Guard and was eventually converted into a recreational space after the decommissioning of the camp in the years following the Second World War. Today, the former camp is the site of a condominium complex.

Fishkill Barracks served as a supply depot, and was constructed in 1776, in Fishkill, Dutchess County, New York. It saw operation from 1776 to 1782. Its barracks were large enough to house 2,000 troops, and were located one mile below the village of Fishkill on each side of what is presently Route 9. The river port to the east, Fishkill Landing, is now the Town of Beacon. The depot was on the east bank of the Hudson above Fish Kill. When the depot's construction began, Fishkill Cove or Wiccopee Pass to the south was fortified with three batteries. This also was the east end of the 1777 chevaux-de-frise line from Pollopel's (Bannerman's) Island to Fort Plumb Point near New Windsor on the west bank north of the Murder's Kill.

In 1776, Flagstaff Fort was established on Staten Island by American forces. Located on Signal Hill, the fort had previously been the site of a 1663 Dutch blockhouse. In June of 1776, the Continental Army occupied the fort and used it as a means to repel British advances into New York. However, the fort was eventually taken by the British in 1776, along with the city at large. By July 1779, the British had built a redoubt with gun platforms for the 26 cannons on the site. By 1782, the fort had been expanded to include five different bastions. In 1783, Fort Flagstaff was evacuated, but, in 1806, the site became home to Fort Tompkins, which, along with other nearby fortifications, eventually grew into the even larger Fort Wadsworth.

Built in 1715, in Schuylerville, Saratoga County, Flatts Stockade was a loopholed structure built from brick built to defend British territory in New York. After three decades of operation, the stockade met its unfortunate end; the fortification was burned down by French forces in 1745.

In 1928, Floyd Bennett Field was established in Kings County, Brooklyn. Originally known as New York City Municipal Airport, it served as a Naval Air Station from 1941 to 1971. The station doubled as a base for the Air National Guard during this period. In addition, the base currently serves as a Coast Guard Air Station and has facilitated their operations since 1938.

Forest Hill Redoubt was established in Manhattan, on the Hudson River at the north end of Washington Heights, in 1776. The redoubt was an earthen redan on a 250-foot hill overlooking Inwood Village, located between Fort Washington and Fort Cock Hill. In 1778 and 1779, the British erected Fort Tryon on the site, successfully capturing New York City during the Revolutionary War. Today, the site is known as Fort Tryon Park, which features an observation platform, and various commemorative plaques.

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Formerly known as Grenadier’s Battery, Foundry Redoubt was a British reconstruction of the formerly American fort. Grenadier was captured by the British in 1776 and was expanded into Foundry Redoubt in 1780. Located in New York City, the redoubt was utilized by British forces until the Empire was forced to evacuate the city upon the return of the Continental Army in 1783. The fortification was abandoned following the end of the Revolutionary War.

Four Mile Post, 1755/59, Warren County, Glens Falls. Located four miles North of Fort Edward on road to Fort George (Lake George).

Fort Fox was built in 1780 during the tail end of the Revolutionary War, in Montgomery County, New York, Near Nelliston. The structure was a fortified and loopholed stone house, belonging to Philip Fox. The site of the house can be found to the West of Fort Wagner near Palatine Church on Caroga Creek.

Fort Franklin was a Revolutionary War era fort built in 1777, in Suffolk County, New York, on Long Island. The structure was built by British forces, who had captured Long Island and New York City in 1776 during the early years of the conflict. Today, the British fortifications at and around Fort Franklin are part of Caumsette State Park.

Fort Frederick, 1676, Albany County, Albany. Originally a stockade of wood construction which replace Fort Orange which was on the river. It was rebuilt as a masonry fort between 1702-35, on State Street hill (21 guns), originally with a stockade that enclosed the city. Torn down about 1789. Referred to in "Drums Along the Mohawk" as Fort Albany. A letter 2 April 1703 mentions a new fort is being built. The following was taken from "The English Stone Fortress: Fort Frederick" by William Glidden. It appeared in the September 17, 2003 issue of the Lake Champlain Weekly. War clouds were again threatening in 1702 with the efforts of Louis XIV to place his grandson, Phillip, on the throne of Spain. Britain feared that such an event would enable France to monopolize the trade of the Spanish Empire. On May 15, 1702 Great Britain and the Netherlands declared war against France -a war known as the War of Spanish Succession in Europe and as Queen Anne's War in North America. In North America, Edward Hyde, Viscount Cornbury, cousin of Queen Anne, arrived as a kind of commander-in-chief. As Royal Governor of New York and the first Royal Governor of New Jersey, he was invested with wide authority to improve the English colonists' military posture. The first measure Cornbury sought was to shore up the crown's alliance with the Iroquois by strengthening the faction within the Five Nations of the Iroquois that favored the English. His objective was to restore their confidence in England's firmness of purpose. By the late summer of 1702 at a council meeting with the Iroquois in Albany, he announced that he would rebuild New York's frontier forts, providing protection for both the English and their native allies. He also advocated that only a military force from England directed against Quebec could defeat the Canadians. While in Albany, Cornbury undertook to replace the stockaded fort with a new one of stone. Plans were set in motion to have the fort redesigned and relocated to higher ground in order to provide better defense at a lower cost. On August 15, 1702 the cornerstone of the new fort was completed, and he expected the walls to reach five feet in height before the first frost. This was the very proof that the Iroquois and Hudson River Indians wanted of England's concern for their well-being, and it led them to praise the governor's justice and circumspection. Governor Cornbury unofficially called the new fort "Fort Anne." On September 24, 1702, Cornbury wrote to the Lords of Trade: "The fort is in a miserable condition. It is a stockaded fort about one hundred twenty feet long and seventy feet wide. The stockades are almost all rotten. There is but 23 guns in the fort, most of them unserviceable. Thus we were busyed when Mr. Romer arrived at Albany, which was on the 19th day of August, by which time I had laid the foundation of 2/3s of the fort. And I do well hope that before the frost it will be five feet high which will be a good breast work til next spring." Cornbury also informed the Lords of Trade that he had more progress on the fort in a few weeks than Colonel Romer, the imperial engineer, had done in a year and a half. Nor did he hesitate to redesign the fort and relocate it to higher ground. He then demanded an audit of Romer's accounts. Friction flew between the two of them. Cornbury's actions gained the support of Albany's magistrates. Where as the magistrates previous requests for protection had gone unanswered, Cornbury had actually begun construction of a new stone fort large enough to shelter them and their native allies. Cornbury also proposed the construction of four other forts or stone redoubts on the frontier, and in time of war a force of six hundred to man them. The imperial officer Colonel Robert Quary confirmed that the new fort gave "great satisfaction to our Indians, who lay the great stress of their security on the defense of those forts." On June 18, 1703 Colonel Robert Quary wrote to the Lords of Trade: "My Lord Cornbury hath laid the foundation of a stone fort at Albany, and hath carried it on a great way. It will be very regular and answer the end." Emphasis on Albany's defense continued following Cornbury's administration. Acts were passed for repairing the blockhouses, platforms and other fortifications during the administration of Governor Robert Hunter on November 28, 1711, May 7, 1711, July 25, 1715 and on October 2, 1716. Queen Anne's War officially ended with the signing of the Treaty of Utretch on April 11, 1713. Measures were taken in Albany during the years following Queen Anne's War. Acts were passed on October 16 and November 21,1724, during the administration of Governor Burnet to improve security, which included plans for building new blockhouses. Later the blockhouses were fortified with "great guns." With increased activity by the French in the Lake Champlain country, President Van Dam of the New York Assembly reported on September 11,1731 to the Duke of Newcastle that they had voted during the last session that they would in their next take into consideration the building of the fort at Albany. Construction began in 1734 on a new wall around the city. The newer portions of the wall were stone by 1735. Governor William Cosby reported to the Board of Trade on June 10, 1735 that an act had been passed during the last year for fortifying the cities of Albany and Schenectady and other places in the County of Albany. A county laid out northward to the French frontiers. It was finally reported to the Board of Trade on June 2, 1738 that the stone fort was completed at last and named "Fort Frederick" in honor of Frederick Louis, the eldest son of King George II of Great Britain. It was a 200-foot square structure with a bastion at each corner. Within the structure a single, long, brick two-story barracks existed alone one curtain wall and an equally long two-story brick "Governor's House" along the opposite side. Each building had bedsteads for 40 men. A garrison of 300 could be maintained in the fort. The fort mounted eight or ten cannon, most of them 32-pounders. The fort stood throughout the colonial wars. Its existence was proof of England's determination in defending the English colonies and its native allies. However, by 1785 Albany's Common Council decided that the fort at the head of State Street had served its usefulness and should be torn down. The remains of Fort Frederick were used by workmen for the widening of State Street. Much of the stone was also carried off by officers of the different churches to be used for building purposes. At the site of Fort Frederick now stands St. Peter's Episcopal Church within which Colonel George Munro of Fort William Henry fame and George Augustus, Brigadier General Viscount Howe, a significant loss in the expedition against Fort Carillion in 1758, are now buried.

Fort French was built in 1696 in Onondaga County, near Syracuse. The fortification was a temporary construction built for the purpose of facilitating a French raid on the nearby Onondaga tribe. Today, the site of the fort hosts a sewage plant.

In 1702, Fort Frey was constructed in Montgomery County, New York. The fort was located along Route 5, just one mile west of Route 10, north of the Mohawk River. The fort was built around the 1689 cabin belonging to Hendrick Frey and was palisaded by the British. Hendrick Frey, originally from Switzerland, was the first to settle the region when the cabin was initially built, with the nearest settlement being over thirty miles away, in Schenectady. The cabin-turned-fort saw continuous operation until 1713 during Queen Anne's War. In 1739, the fort was replaced with a loopholed stone building, which was used during the Seven Years’ War in the 1750s. The fort was abandoned in 1760.