(approx.) Last ice advance (Wisconsinian) begins retreat in Long Island area. As it recedes, it pauses, leaving behind piles of glacial debris. Fishers Island is formed.
Dutch explorer Captain Adrian Block discovers Fishers Island.
John Winthrop the Younger successfully appeals to the General Court of Massachusetts for grant to Fishers Island.
To further confirm land grant, John Winthrop purchases Fishers Island from Native Americans. First settlement is established.
Signal beacon erected on Mount Prospect.
British fleet repeatedly raids Fishers Island, seizing sheep, cattle, hogs and other provisions. In most instances, compensation is made.
July 5 British plunder Fishers Island and Plum Island, seizing livestock and torching hay and buildings. No compensation made.
September 6 British force invades New London, burning large sections of the city. Defenders of Fort Griswold, Groton, slaughtered after surrendering. Nathaniel Shaw, New London's greatest patriot, misses the battle while fishing on Fishers Island.
Winthrop heirs sell Fishers Island to George Chester for $55,000; title transferred to Robert R. Fox.
Government acquires "10 and three-tenths acres, more or less," at Race Point.
US Army leases land on the western tip of Fishers Island. Rifle squads from Fort Trumbull, New London arrive for military training.
March 3 President Cleveland appoints "Board on Fortifications or Other Defenses," commonly known as the Endicott Board.
January 26 The Endicott Board releases its report, detailing program for new seacoast defenses.
July-Sept. Troops arrive for training exercises. Tourists flock to Fishers Island to watch the military spectacle. Mock invasion by the Navy is canceled at the last moment.
Edmund M. and Walton Ferguson purchase almost all of Fishers Island for $250,000.
November 14 Harper's Weekly publishes article proposing a chain of island forts across the outer entrance to Long Island Sound.
July 17 Captain Smith S. Leach, Corps of Engineers, is ordered to prepare plans for the defense of the eastern entrance to
Long Island Sound and to secure land for fortifications.
July 17-24 Naval Battalion, Connecticut National Guard, encamps on Fishers Island for tour of duty aboard the USS Maine.
August 24 Condemnation hearings begin in Brooklyn, NY, to determine price for fort site on Fishers Island.
February 15 USS Maine blows up in Havana Harbor.
April 25 Congress declares nation has been at war with Spain since April 21.
April-May Major Leach implements emergency defense plan for Long Island Sound.
June 24 Condemnation Board awards Edmund M. and Walton Ferguson a total of $167,000 for 215 acres of condemned land on the western tip of Fishers Island. Theodora Gordon receives $6,000 for "1 acre plus house."
September 5 Military in full possession of land for fortification purposes on Fishers Island.
December Construction of gun emplacements begins.
February Silver Eel Pond dredged open, creating cove for military dock.
April 4 Post named in honor of Major General Horatio G. Wright, Civil War commander and former Chief of Engineers.
February First troops arrive at Fort H.G. Wright.
March 7 Artillery Corps takes over first completed batteries for 6-inch, 10-inch, and 12-inch disappearing guns.
October 31 Dynamite gun successfully test-fired at Race Point.
September 1-5 Joint Army-Navy maneuvers pit the island forts against the North Atlantic Squadron. Fort H.G. Wright 'sinks' squadron.
Government acquires additional land, including west side of Hay Harbor peninsula, tract on Mount Prospect and right-of-way across golf course.
January 1 Sixty-seven members of 131st Co., Coast Artillery, placed under arrest for refusing orders to take 15-mile march around the Island.
July 30 Militiamen battle regulars at Fort Wright after being called "tin soldiers."
New hospital is built overlooking Silver Eel Cove.
April 6 US declares war on Germany.
Fort H.G. Wright becomes the Headquarters of the Coast Defenses of Long Island Sound (CDLIS).
December 20 56th Regiment, Coast Artillery Corps (CAC), is formed from within the CDLIS.
March 28 56th Regiment leaves Fort H.G. Wright for service overseas, participates
in the Oisne-Aisne and Meuse-Argonne offensives.
April 6 Government purchases 18.37 acre tract on North Hill.
June 1 68th Regiment, CAC, is formed from within the CDLIS. The 68th leaves Fort H.G. Wright on August 7, for service in France. The regiment arrives too late to engage in active combat.
(Circa) Hangar is constructed for observation balloons.
Sub-aqueous sound ranging experiments begin at Fort H.G. Wright.
Fort H.G. Wright becomes the Headquarters for the 11th Coast Artillery Regiment.
The term "coast defenses" is replaced by "harbor defenses", as it more accurately describes the primary function of the Coast Artillery Corps.
Fort H.G. Wright becomes the Headquarters of the Harbor Defenses of the Long Island Sound.
June 11 Elizabeth Field is dedicated, named in honor of Elizabeth Nugent, daughter of Col. George A. Nugent, Commander of Fort H.G. Wright.
Fort theater opens.
September 21 Hurricane hits Fishers Island.
Harbor Defense Modernization Program proposes long-range armament for the defense of the Sound.
Reported capacity at Fort H.G. Wright: 30 officers, 30 NCOs, 703 enlisted men, 23 animals, and 32 hospital beds.
August 27 National Guard mobilized.
September 16 242nd Coast Artillery of the Connecticut National Guard assigned to the Harbor Defenses of Long Island Sound.
December 7 Harbor Defenses of Long Island Sound placed on full alert.
Fort H.G. Wright becomes major center for processing Coast Artillery troops for domestic and overseas service.
April 6 Government leases Hill 90, at the east end of Fishers Island, also known as Hill Watch, for fire-control stations and fire-control radar.
Government purchases 94.42 acres at Wilderness Point for modern batteries. Overall size of military reservation approximately 419 acres.
February 15 Construction begins for two 16-inch gun emplacements on Wilderness Point.
June 28 Womens Auxiliary Army Corps (WAC) activated and assigned to Fort H.G. Wright.
March 3 US Navy Lighter-Than-Air Detachment ONE-ONE, arrives at Elizabeth Field.
March 12 11th Coast Artillery Regiment departs for Fort Leonard Wood, MO. 242nd Coast Artillery assumes control of the Harbor Defenses of Long Island Sound.
May 23 16-inch gun emplacements at Wilderness Point completed. Guns never mounted due to diminished threat to the region.
September 242nd Coast Artillery Regiment inactivated, personnel reassigned.
July 16 Alamogordo, NM. Nuclear Age begins.
May 31 Fort H.G. Wright placed in an inactive status, pending further study for other possible uses.
Government screens Fort H.G. Wright and decides "there is no further need for the property."
June 30 Coast Artillery is abolished. Jet aircraft, long-range missiles and nuclear weapons render harbor defense by seacoast artillery obsolete.
August 15 Race Point Corporation buys fifty-six acre tract of Fort H.G. Wright by auction for $350,000.