Battle of Fort Oswego
Encyclopedia
The Battle of Fort Oswego was one in a series of early French victories in the North American theatre
French and Indian War
The French and Indian War is the common American name for the war between Great Britain and France in North America from 1754 to 1763. In 1756, the war erupted into the world-wide conflict known as the Seven Years' War and thus came to be regarded as the North American theater of that war...

 of the Seven Years' War
Seven Years' War
The Seven Years' War was a global military war between 1756 and 1763, involving most of the great powers of the time and affecting Europe, North America, Central America, the West African coast, India, and the Philippines...

 won in spite of New France's
New France
New France was the area colonized by France in North America during a period beginning with the exploration of the Saint Lawrence River by Jacques Cartier in 1534 and ending with the cession of New France to Spain and Great Britain in 1763...

 military vulnerability. During the week of August 10, 1756, a force of regulars and Canadian
Canada, New France
Canada was the name of the French colony that once stretched along the St. Lawrence River; the other colonies of New France were Acadia, Louisiana and Newfoundland. Canada, the most developed colony of New France, was divided into three districts, each with its own government: Quebec,...

 militia under General Montcalm
Louis-Joseph de Montcalm
Louis-Joseph de Montcalm-Gozon, Marquis de Saint-Veran was a French soldier best known as the commander of the forces in North America during the Seven Years' War .Montcalm was born near Nîmes in France to a noble family, and entered military service...

 captured and occupied the British fortifications at Fort Oswego
Fort Oswego
Fort Oswego was an important frontier post for British traders in the 18th century. A trading post was established in 1722 with a log palisade, and New York governor William Burnet ordered a fort built at the site in 1727. The log palisade fort established a British presence on the Great Lakes....

, located at the site of present-day Oswego, New York
Oswego, New York
Oswego is a city in Oswego County, New York, United States. The population was 18,142 at the 2010 census. Oswego is located on Lake Ontario in north-central New York and promotes itself as "The Port City of Central New York"...

.

In addition to 1,700 prisoners, Montcalm's force seized the fort's 121 cannon. The fall of Fort Oswego effectively interrupted the British presence on Lake Ontario
Lake Ontario
Lake Ontario is one of the five Great Lakes of North America. It is bounded on the north and southwest by the Canadian province of Ontario, and on the south by the American state of New York. Ontario, Canada's most populous province, was named for the lake. In the Wyandot language, ontarío means...

 and removed it as a threat to the nearby French-controlled Fort Frontenac
Fort Frontenac
Fort Frontenac was a French trading post and military fort built in 1673 in Kingston, Ontario, Canada. It was positioned at the mouth of the Cataraqui River where the St. Lawrence River leaves Lake Ontario , in a location traditionally known as Cataraqui...

. The battle was notable for demonstrating that traditional European siege
Siege
A siege is a military blockade of a city or fortress with the intent of conquering by attrition or assault. The term derives from sedere, Latin for "to sit". Generally speaking, siege warfare is a form of constant, low intensity conflict characterized by one party holding a strong, static...

 tactics were viable in North America when applied properly in the right circumstances and terrain.

Background

Following the beginning of open conflict between French and British colonists in 1754 with the Battle of Jumonville Glen
Battle of Jumonville Glen
The Battle of Jumonville Glen, also known as the Jumonville affair, was the opening battle of the French and Indian War fought on May 28, 1754 near what is present-day Uniontown in Fayette County, Pennsylvania...

, the governments of Britain and France both sent regular army
Regular army
A regular army consists of the permanent force of a country's army that is maintained under arms during peacetime.Countries that use the term include:*Australian Army*British Army*Canadian Forces, specifically "Regular Force"*Egyptian army*Indian Army...

 troops to North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

 to further contest the disputed territories of the Ohio Country
Ohio Country
The Ohio Country was the name used in the 18th century for the regions of North America west of the Appalachian Mountains and in the region of the upper Ohio River south of Lake Erie...

 and other border areas, including the frontier between the French province of Canada
Canada, New France
Canada was the name of the French colony that once stretched along the St. Lawrence River; the other colonies of New France were Acadia, Louisiana and Newfoundland. Canada, the most developed colony of New France, was divided into three districts, each with its own government: Quebec,...

 and the British province of New York
Province of New York
The Province of New York was an English and later British crown territory that originally included all of the present U.S. states of New York, New Jersey, Delaware and Vermont, along with inland portions of Connecticut, Massachusetts, and Maine, as well as eastern Pennsylvania...

, an area in present-day Upstate New York
Upstate New York
Upstate New York is the region of the U.S. state of New York that is located north of the core of the New York metropolitan area.-Definition:There is no clear or official boundary between Upstate New York and Downstate New York...

 that was then largely controlled by the Iroquois
Iroquois
The Iroquois , also known as the Haudenosaunee or the "People of the Longhouse", are an association of several tribes of indigenous people of North America...

 nations. Part of the British plans for 1755 included an expedition to take Fort Niagara
Fort Niagara
Fort Niagara is a fortification originally built to protect the interests of New France in North America. It is located near Youngstown, New York, on the eastern bank of the Niagara River at its mouth, on Lake Ontario.-Origin:...

 at the western end of Lake Ontario
Lake Ontario
Lake Ontario is one of the five Great Lakes of North America. It is bounded on the north and southwest by the Canadian province of Ontario, and on the south by the American state of New York. Ontario, Canada's most populous province, was named for the lake. In the Wyandot language, ontarío means...

. The planned route for this expedition followed the Oswego River
Oswego River (New York)
The Oswego River is a river in upstate New York in the United States. This river is the second-largest river flowing into Lake Ontario. James Fenimore Cooper’s novel The Pathfinder, or The Inland Sea is set in the Oswego River valley...

 to the lake, with a major base of operations at the mouth of the river (where the present-day city of Oswego, New York
Oswego, New York
Oswego is a city in Oswego County, New York, United States. The population was 18,142 at the 2010 census. Oswego is located on Lake Ontario in north-central New York and promotes itself as "The Port City of Central New York"...

 is located). Under the direction of William Shirley
William Shirley
William Shirley was a British colonial administrator who served twice as Governor of the Province of Massachusetts Bay and as Governor of the Bahamas in the 1760s...

, the governor of the Province of Massachusetts Bay
Province of Massachusetts Bay
The Province of Massachusetts Bay was a crown colony in North America. It was chartered on October 7, 1691 by William and Mary, the joint monarchs of the kingdoms of England and Scotland...

, the original Fort Oswego
Fort Oswego
Fort Oswego was an important frontier post for British traders in the 18th century. A trading post was established in 1722 with a log palisade, and New York governor William Burnet ordered a fort built at the site in 1727. The log palisade fort established a British presence on the Great Lakes....

 was reinforced, and two additional forts, Fort George
Fort George, New York
Fort George, New York was the name of five forts in the state of New York.The first Fort George was built in 1626 in New Amsterdam and named Fort Amsterdam. The British Army occupied it as Fort James from 1664 to 1687. Briefly re-occupied by the Dutch from 1673-1674 as Fort Willem Hendrick, it was...

 and Fort Ontario
Fort Ontario
Fort Ontario is a historic fort situated by the City of Oswego, in Oswego County, New York in the United States of America. It is owned by the state of New York and operated as a museum known as Fort Ontario State Historic Site....

, were built in 1755. The planned expedition to Fort Niagara never took place due to logistical difficulties, and the fortifications around Oswego were manned during the winter of 1755–56.

The French in 1755 had the only large naval vessels on Lake Ontario, and moved freely about the lake, between Fort Niagara in the west and Fort Frontenac
Fort Frontenac
Fort Frontenac was a French trading post and military fort built in 1673 in Kingston, Ontario, Canada. It was positioned at the mouth of the Cataraqui River where the St. Lawrence River leaves Lake Ontario , in a location traditionally known as Cataraqui...

 at the head of the Saint Lawrence River
Saint Lawrence River
The Saint Lawrence is a large river flowing approximately from southwest to northeast in the middle latitudes of North America, connecting the Great Lakes with the Atlantic Ocean. It is the primary drainage conveyor of the Great Lakes Basin...

. In March 1756 they launched a winter attack on Fort Bull
Battle of Fort Bull
The Battle of Fort Bull was a French attack on the British-held Fort Bull on 27 March 1756, early in the French and Indian War.Lt. Gaspard-Joseph Chaussegros de Léry led his command consisting of forces from the Troupes de la Marine, Canadian militia, and Indian allies on an attack against Fort...

, a key supply depot for the Oswego forts. In the successful attack, they destroyed many provisions intended for the Oswego garrison, and effectively ruined Shirley's plan to attempt the expedition against Fort Niagara in 1756. Following orders of the Governor of New France
New France
New France was the area colonized by France in North America during a period beginning with the exploration of the Saint Lawrence River by Jacques Cartier in 1534 and ending with the cession of New France to Spain and Great Britain in 1763...

, Pierre François de Rigaud, Marquis de Vaudreuil-Cavagnal
Pierre François de Rigaud, Marquis de Vaudreuil-Cavagnal
Pierre François de Rigaud, Marquis de Vaudreuil-Cavagnal was a Canadian-born French colonial governor in North America...

, in May 1756 French and Indian raiding parties under the command of Louis Coulon de Villiers
Louis Coulon de Villiers
Sieur Louis Coulon de Villiers was a French Canadian military officer during the French and Indian War . Perhaps his greatest claim to fame is the fact that he is the only military opponent to force George Washington to surrender.Coulon was born into a prominent French Canadian family...

 began harassing the Oswego garrison from a camp on Henderson Bay (south of present-day Sackett's Harbor, New York).

General Louis-Joseph de Montcalm
Louis-Joseph de Montcalm
Louis-Joseph de Montcalm-Gozon, Marquis de Saint-Veran was a French soldier best known as the commander of the forces in North America during the Seven Years' War .Montcalm was born near Nîmes in France to a noble family, and entered military service...

 arrived in Montreal
Montreal
Montreal is a city in Canada. It is the largest city in the province of Quebec, the second-largest city in Canada and the seventh largest in North America...

 in May 1756 to lead the French army troops. He and Governor Vaudreuil took an immediate dislike to one another, and disagreed over issues of command. Concerned over the massing of British troops at the southern end of Lake George
Lake George (New York)
Lake George, nicknamed the Queen of American Lakes, is a long, narrow oligotrophic lake draining northwards into Lake Champlain and the St. Lawrence River Drainage basin located at the southeast base of the Adirondack Mountains in northern New York, U.S.A.. It lies within the upper region of the...

, Montcalm first went to Fort Carillon
Fort Carillon
Fort Carillon was constructed by Pierre de Rigaud de Vaudreuil, Governor of Canada, to protect Lake Champlain from a British invasion. The fort was not far from Fort Saint Frédéric. It was built to prevent an attack on Canada and slow the advance of the enemy long enough to send reinforcements...

 on Lake Champlain
Lake Champlain
Lake Champlain is a natural, freshwater lake in North America, located mainly within the borders of the United States but partially situated across the Canada—United States border in the Canadian province of Quebec.The New York portion of the Champlain Valley includes the eastern portions of...

 to see to its defenses. Vaudreuil meanwhile began massing troops at Fort Frontenac for a potential assault on Oswego. Following favorable reports from the raiding parties, Montcalm and Vaudreuil decided to make the attempt.
Governor Shirley received word in March 1756 that he was to be replaced by John Campbell, 4th Earl of Loudoun
John Campbell, 4th Earl of Loudoun
Major-General John Campbell, 4th Earl of Loudoun was a British nobleman and army officer.-Early career:Campbell inherited the peerage on the death of his father in 1731, becoming Lord Loudoun. The earl raised a regiment of infantry that took part in the Jacobite Rising of 1745 on the side of the...

. Loudoun's second in command, General James Abercrombie, only arrived in Albany in late June, and Shirley spent the intervening time shoring up the supply line to Oswego in anticipation of leading an expedition against the French forts on Lake Ontario. In June William Johnson
Sir William Johnson, 1st Baronet
Sir William Johnson, 1st Baronet was an Anglo-Irish official of the British Empire. As a young man, Johnson came to the Province of New York to manage an estate purchased by his uncle, Admiral Peter Warren, which was located amidst the Mohawk, one of the Six Nations of the Iroquois League...

 traveled to the Iroquois headquarters at Onondaga, and successfully negotiated support for the British side with the Iroquois, Shawnee
Shawnee
The Shawnee, Shaawanwaki, Shaawanooki and Shaawanowi lenaweeki, are an Algonquian-speaking people native to North America. Historically they inhabited the areas of Ohio, Virginia, West Virginia, Western Maryland, Kentucky, Indiana, and Pennsylvania...

, and Delaware
Lenape
The Lenape are an Algonquian group of Native Americans of the Northeastern Woodlands. They are also called Delaware Indians. As a result of the American Revolutionary War and later Indian removals from the eastern United States, today the main groups live in Canada, where they are enrolled in the...

, forces that Shirley also hoped to use for his expedition. Shirley also hired 2,000 armed "battoemen"
Bateau
A bateau or batteau is a shallow-draft, flat-bottomed boat which was used extensively across North America, especially in the colonial period and in the fur trade. It was traditionally pointed at both ends but came in a wide variety of sizes...

, men experienced in sailing and shipbuilding. Under the command of John Bradstreet
John Bradstreet
Major General John Bradstreet was a British Army officer during the French and Indian War, King George's War, and Pontiac's Rebellion...

, these men successfully resupplied the forts at Oswego in July, although they were attacked by a French raiding party on their way back, suffering 60 to 70 casualties.

When Loudoun arrived in Albany in late July, he immediately cancelled Shirley's plans for an Oswego-based expedition.

Defenses at Oswego

The complex of defenses at Oswego consisted of three separate fortresses. On the east side of the Oswego River lay Fort Ontario, a log fortification which was constructed in 1755, was sited on a rise overlooking the mouth of the river. It was garrisoned by 370 men from Pepperrell's Regiment
Pepperrell's Regiment
The 51st, or Pepperrell's Regiment of Foot was a British army infantry regiment raised in North America during the French and Indian War.Two regiments were raised in New England with funds supplied by the British Crown, entering the army list as the 50th and 51st Regiments of Foot...

, and was in fairly good repair. Fort Oswego was on the west side of the river, and had a central structure of stone and clay surrounded by earthworks to the south and west, but fully exposed to Fort Ontario, across the river. A recently-constructed Fort George (called "Fort Rascal" by one of Shirley's Regiment
Shirley's Regiment
The 50th, or Shirley's Regiment of Foot was a British army infantry regiment raised in 1754 in North America during the French and Indian War....

, which occupied Fort Oswego) consisted of an incomplete wooden palisade fort that lacked even loopholes through which defenders could fire, and was occupied by 150 New Jersey militiamen. The latter two forts did not have very much shelter for the occupying garrison, and there were only a few cannon for the entire complex of defenses.

Significant elements of the two Massachusetts regiments, which were under the overall command of Colonel James Mercer of Pepperrell's Regiment, had overwintered there, and suffered significantly due to the shortage of supplies, especially food. Many men died during the winter from diseases such as scurvy
Scurvy
Scurvy is a disease resulting from a deficiency of vitamin C, which is required for the synthesis of collagen in humans. The chemical name for vitamin C, ascorbic acid, is derived from the Latin name of scurvy, scorbutus, which also provides the adjective scorbutic...

, and there had been serious discussion of abandoning the position for want of supplies. While the garrison nominally approached 2,000 men in size, less than 1,200 men were fit for duty.

French approach

Montcalm left Carillon on July 16 under the command of the Chevalier de Levis, reaching Montreal three days later. Two days later he left for Fort Frontenac, where French troops were gathering along with a large company of Indians. French forces included the battalions of La Sarre
Régiment La Sarre
The Régiment La Sarre was a French Army regiment active in the 18th century. It is principally known for its role in the Seven Years' War, when it served in the North American theatre.-History:...

, Guyenne
Régiment de Guyenne
The Régiment de Guyenne was a French Army infantry regiment in the 18th century. It is principally known for its role in the Seven Years' War, when it served in the North American theatre.-History:...

, and Béarn
Régiment de Béarn
The Régiment de Béarn was a French Army regiment active in the 18th century. It is principally known for its role in the Seven Years' War, when it served in the North American theatre.-History:...

, troupes de la marine
Troupes de la marine
See also Troupes de Marine for later history of same Corps.The Troupes de la Marine , also known as independent companies of the navy and colonial regulars, were under the authority of the French Minister of Marine, who was also responsible for the French navy, overseas trade, and French...

, and colonial militia, while Indians, numbering about 250, came from all over the territories of New France. The total size of the force was reckoned to be 3,000 men. The governor's brother, François-Pierre de Rigaud, led an advance force of 700 to meet with Villiers' force at Sackett Harbor before the main force set out on August 4. Crossing at night to what is now called Wolfe Island
Wolfe Island (Ontario)
Wolfe Island is an island located at the entrance to the Saint Lawrence River in Lake Ontario near Kingston, Ontario. Wolfe Island is part of Frontenac County, Ontario. Together with Howe Island, Simcoe Island, and Hickory Island forms the Township of Frontenac Islands. It is the largest of the...

, the vanguard of the main body spent the day there before crossing at night to Sackett's Harbor. By August 8 the entire force was assembled there, and set out the next day for Oswego.

On August 9, troops under Rigaud and Villiers marched overland toward Oswego, while Montcalm and the remaining force moved close to the shore in bateau
Bateau
A bateau or batteau is a shallow-draft, flat-bottomed boat which was used extensively across North America, especially in the colonial period and in the fur trade. It was traditionally pointed at both ends but came in a wide variety of sizes...

x, landing about 2 miles (3.2 km) east of Fort Ontario early on August 10. Their stealth in movement was successful, and the British did not discover them until a small patrol boat spotted them the next morning. Larger boats sent by the British were driven away by the French field artillery.

Battle

Montcalm's engineer went to survey the British defenses, accompanied by other officers and a party of Indians. One of the Indians, eager for a scalp, mistook the engineer for a British soldier at one point and shot him dead. Montcalm asked Pierre Pouchot
Pierre Pouchot
Captain Pierre Pouchot was a French military engineer and officer in the French regular army.He was born at Grenoble, France, son of a merchant. In 1733 he joined the regular army as a volunteer engineer and on May 1, 1734 was appointed a second lieutenant in the Regiment de Bearn...

 to continue with the work of determining how to besiege the British positions.

On the night of August 11–12 the French opened siege trenches and began working toward Fort Ontario. The fort's defenders exchanged cannon and gunfire with the French colonists and Indians until late in the day on August 13, at which point, apparently under orders from Mercer, they abandoned the fort even before the siege trenches had reached their goal.

Immediately capitalizing on this, Montcalm occupied the fort and began the construction of batteries on the western edge of the height, where they could reach Fort Oswego's exposed east side. Moving with all speed, the French had nine working cannon established by the morning of August 14. When these opened fire on the exposed stonework of Fort Oswego, the walls crumbled under the onslaught. The garrison, whose cannon were all pointed away from the river (not expecting enemy fire to come from that direction), eventually turned their guns around, and the French fire was returned to some effect. However, Montcalm had ordered Rigaud to lead some men across the river upstream from the fortifications, and these men, who made an unopposed crossing under somewhat difficult conditions, appeared on the edge of the clearing outside Fort Oswego about the same time that Colonel Mercer was struck and killed by a French shell. After a short council John Littlehales, who took over command from Mercer, raised the white flag.

Aftermath

The British surrendered about 1,700 people, including laborers, shipbuilders, women and children. When the fort was opened to the Canadian militia and Indians, they rushed in and began plundering the fort, opening the barrels of rum and getting drunk on the contents. Amid the confusion some of the British tried to escape, and were tomahawked and killed by drunken French or Indians. General Montcalm, shocked by the behavior, was eventually able to prevent further killings, although he claimed it would "cost the King eight or ten thousand livres in presents." He then ordered the destruction of all the supplies the French did not take, as well as the boats under construction, after which the entire company, including the prisoners, traveled to Montreal.

On August 12, Loudoun finally dispatched reinforcements from the 44th Regiment of Foot
44th Regiment of Foot
The 44th Regiment of Foot was an infantry regiment in the British Army. After 1782 the regiment became known as the 44th Regiment of Foot. The lineage of the 44th transferred to the Essex Regiment in 1881...

 and Bradstreet's battoemen toward Oswego. When these troops reached the Oneida Carry
Oneida Carry
-Overview:The Oneida Carry was an important link in the trade route between Albany, New York, Oneida Lake, and Lake Ontario during the 18th Century...

 they learned that Oswego had fallen; after destroying the fortifications there, they retreated to German Flatts, where Loudoun ordered them to stay to prevent further French advances. Loudoun spent significant effort over the following months to pin the blame for the loss on William Shirley. He was cleared of all formal charges in an inquiry, but numerous irregularities were highlighted. Shirley's political connections in London enabled him to acquire other desirable posts later in his career.

Oswego was effectively abandoned until 1758, when the British reoccupied the area, and Bradstreet led an expedition that captured and destroyed Fort Frontenac
Battle of Fort Frontenac
The Battle of Fort Frontenac took place on August 26–28, 1758 during the Seven Years' War between France and Great Britain. The location of the battle was Fort Frontenac, a French fort and trading post which is located at the site of present-day Kingston, Ontario, at the eastern end of Lake...

. It was used again in 1759 as a departure point for a successful expedition against Fort Niagara
Battle of Fort Niagara
The Battle of Fort Niagara was a siege late in the French and Indian War, the North American theatre of the Seven Years' War. The British siege of Fort Niagara in July 1759 was part of a campaign to remove French control of the Great Lakes and Ohio Valley regions, making possible a western invasion...

, and in 1760 by Jeffrey Amherst's army as it moved toward Montreal.
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