Penobscot Expedition

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Penobscot Expedition
Part of the American Revolutionary War
Britain defending New Ireland from the Penobscot Expedition by Dominic Serres
Date July 24 – August 14, 1779
Location Penobscot Bay, present-day Maine
Result British victory
 Great Britain  United States
Commanders and leaders
Francis McLean
George Collier
Henry Mowat
Solomon Lovell
Dudley Saltonstall
Peleg Wadsworth
Paul Revere
700 regulars[1]
10 warships[2]
1,000+ militia
Continental Marines
19 warships[2]
24 support ships[2]
Casualties and losses
25 killed
35 wounded
26 captured[3][4]
474 killed, wounded, captured or missing
All ships lost[5]

The Penobscot Expedition was an American naval expedition sent to reclaim the Penobscot region in what is now Maine, which the British had seized and renamed New Ireland. It was the largest American naval expedition of the American Revolutionary War and was the United States' worst naval defeat prior to Pearl Harbor.[6] The fighting took place both on land and at sea, in and around what is today Castine, Maine, in July and August of 1779. The defeat of this expedition was one of the greatest British victories of the war.

In June of that year, British Army forces under the command of General Francis McLean had established a series of fortifications centered on Fort George, located on the Majabigwaduce Peninsula in Penobscot Bay, with the goals of establishing a military presence on that part of the coast and establishing the colony of New Ireland. In response, the state of Massachusetts, with some support from the Continental Congress, raised an expedition to drive the British out.

The Americans landed troops in late July and attempted to establish a siege of Fort George in a series of actions that were seriously hampered by disagreements over control of the expedition between Commodore Dudley Saltonstall and Brigadier General Solomon Lovell. For two weeks British General Francis McLean held off the assault until a British relief fleet under the command of Sir George Collier arrived from New York on August 13, driving the American fleet to total self-destruction up the Penobscot River. The survivors of the American expedition were forced to make an overland journey back to more populated parts of Massachusetts with minimal food and armament.


Following the partially successful raid of Machias in 1777, as well as General John Burgoyne's failed Saratoga campaign, British war planners looked for other ways to gain control over the rebellious New England colonies, while most of their effort was directed at another campaign targeted at the southern colonies. As those responsible for the war effort, Secretary of State for the Colonies Lord Germain and Under-Secretary William Knox wanted to establish a base on the coast of the District of Maine (which until achieving statehood in 1820 was a part of Massachusetts) that could be used to protect Nova Scotia's shipping and communities from American privateers and raiders.[7] Among the specific reasons that the British undertook this occupation were: to keep open the timber supply of the Maine coast for masts and spars for the Royal Navy; that the Maine coast down to the Penobscot was immediately adjacent to the Bay of Fundy which was easily approached from the large British naval base at Halifax, and; because Loyalist refugees in Castine had proposed the establishment a new colony or province to be called New Ireland as a precursor to the establishment of Loyalist New Brunswick in 1784.[8][9]

Opportunity arrived when John Nutting, a Loyalist who had piloted Sir George Collier's expedition against Machias, came to London with the idea of establishing a British military presence in Maine. In September 1778, Nutting left for New York carrying orders for Lieutenant General Sir Henry Clinton to assist with the establishment of "a province between the Penobscot and St. Croix rivers. Post to be taken on Penobscot River."[10] It was Knox's idea to call this province New Ireland.[6] Unfortunately for the British, Nutting's ship was captured by an American privateer, and he was forced to dump his dispatches, putting an end to execution of the idea in 1778.[10]

British forces arrive[edit]

A 1785 map depicting this action. The map is in mirror image (the Penobscot River is actually west of the Majabigwaduce peninsula, where the fort is located) and not to scale.

Nutting reached New York in January 1779, but General Clinton had received copies of the orders from other messengers. Clinton had already assigned the expedition to General Francis McLean who was based in Halifax and thus sent Nutting there with Germain's detailed instructions.[11]

McLean's expedition set sail from Halifax on May 30, 1779, and arrived in the Penobscot Bay on June 12. The next day McLean and Captain Andrew Barkley, the commander of the naval convoy, identified a suitable site at which they could establish a post.[12] On June 16, his forces began landing on a peninsula that was then called Majabigwaduce (now Castine), between the mouth of the Bagaduce River and a finger of the bay leading to the Penobscot River.[6] The troops numbered approximately 700: 50 men of the Royal Artillery and Engineers, 450 of the 74th Regiment of (Highland) Foot and 200 of the 82nd (Duke of Hamilton's) Regiment.[1] These began to build a fortification on the peninsula, which jutted into the bay and commanded the principal passage into the inner harbor.

Fort George was established in the center of the small peninsula with two batteries outside the fort to provide cover for the Albany, which was the only ship expected to stay in the area. A third battery was constructed on an island south of the bay in which the Albany was harbored, near the mouth of the Bagaduce River. Construction of the works occupied the troops for the next month, until rumors came that an American expedition was being raised in Boston to oppose them,[13] following which efforts were redoubled to have works suitable for defense against the Americans prepared before they arrived.[14] Captain Henry Mowat of the Albany, who was familiar with Massachusetts politics, took the rumors (which were followed by reports that a fleet had left Boston) quite seriously, and convinced General McLean to leave additional ships that had been part of the initial convoy as further defense. Some of the convoy ships had already left; orders for armed sloops North and Nautilus were countermanded before they were able to leave.[15]

American reaction[edit]

When news of this reached the American authorities at Boston, they hurriedly made plans to drive the British from the area. The Penobscot River was the gateway to lands controlled by the Penobscot Indians who generally favored the British. Congress feared that if a fort were successfully constructed at the mouth of the river, all chance of enlisting the Penobscots as allies would be lost. Massachusetts was also motivated by the fear of losing their claim over the territory to rival states in any post-war settlement.[16]

To spearhead the expedition, Massachusetts petitioned Congress for the use of three Continental Navy warships—the 12-gun sloop Providence, 14-gun brig Diligent, and 32-gun frigate Warren—while the rest of over 40 vessels were made up of both ships of the Massachusetts State Navy and private vessels under the command of Commodore Dudley Saltonstall. The Massachusetts authorities mobilized more than 1,000 militia, acquired six small field cannons, and placed Brigadier General Solomon Lovell in command of the land forces. The expedition departed from Boston on July 24 and arrived off Penobscot Bay that same day.


On July 25, nine of the larger vessels in the American flotilla exchanged fire with the Royal Navy ships from 3.30 p.m to 7.00 p.m. While this was going on, seven American boats approached the shore for a landing but turned back when enemy fire killed an American-allied Native warrior in one of the boats.[17] On July 26, Lovell sent a force of Continental Marines to capture the British battery on Nautilus Island (also known as Banks Island),[18] while the militia were to land at Bagaduce. The marines achieved their objective but the militia turned back when British shot overturned the leading boat, drowning Major Daniel Littlefield and two of his men.[19] Meanwhile, 750 men under Lovell landed and began construction of siege works under constant fire. On July 27, the American artillery bombarded the British fleet for three hours, wounding four men aboard HMS Albany.[20]


The Penobscot Bay seen from Dyce's Head, the site of the Americans' pre-dawn landing on July 28, 1779

On July 28, under heavy covering fire from the Tyrannicide, Hunter, andSky Rocket, Brigadier General Peleg Wadsworth led an assault force of 400 (200 marines and 200 militia)[21] ashore before dawn at Dyce's Head on the western tip of the peninsula with orders to capture Fort George. They landed on the narrow beach and advanced up the steep bluff leading to the fort. The British pickets, who included Lieutenant John Moore, put up a determined resistance but received no reinforcement from the fort and were forced to retire, leaving the Americans in possession of the heights. Eight British troops were captured.[4] At this point, Lovell ordered the attackers to halt and entrench where they were. Instead of assaulting the fort, Lovell had decided to build a battery within "a hundred rods" of the British lines and bombard them into surrender.[22] The American casualties in the assault had been severe: "one hundred out of four hundred men on the shore and bank",[23] with the Continental Marines suffering more heavily than the militia. Commodore Saltonstall was so appalled by the losses incurred by his marines that he refused to land any more and even threatened to recall those already on shore.[21]


Sir John Moore served under Francis McLean as a Lt. in the 82nd Regiment

On July 29, one American was killed.,[24] July 30, both sides cannonaded each other all day,[25] and on July 31 two American sailors belonging to the Active were wounded by a shell.[24] Lovell ordered a night assault on August 1 against the Half-Moon Battery located next to Fort George the guns of which posed a danger to the American shipping and the Americans opened fire at 2.00 a.m. Colonel Samuel McCobb's center column, comprising his own Lincoln County Regiment, broke and fled as soon as the British returned fire. The left column comprising Captain Thomas Carnes and a detachment of marines, and the right column comprising sailors from the fleet, both kept going and stormed the Battery. As dawn broke, the Fort’s guns opened up on the captured battery and a detachment of redcoats charged out and recaptured the Half-Moon, routing the Americans and taking 18 prisoners with them. Their own casualties were four men missing (who were killed) and 12 wounded.[26] The siege continued with minor skirmishing on August 2 with militiaman Wheeler Riggs of Falmouth being killed by an enemy cannon shot that bounced off a tree before hitting him.[24] On August 4 Surgeon John Calef recorded in his journal that several men were wounded in exchanges of fire.,[27] on August 5 one American-allied Indian was killed and another man captured,[24] and on August 7, 100 Americans engaged 80 British with one killed and one wounded on the American side and two wounded among the British.[28]

British Commander George Collier - destroyed the American Fleet

During this time, the British had been able to send word of their condition, and request reinforcements and on August 3 Captain (later Vice Admiral) Sir George Collier led a fleet of ten warships out of New York.[29]

On August 11, about 250 American militia advanced from their fortified camp and occupied a recently abandoned battery about a quarter mile (400 meters) from the British fort. As expected, a sortie of about 55 British troops advanced from the fort to engage but the poorly trained American troops fired only one volley at the attacking British troops, inflicting about 13 casualties, and fled back to their fort, leaving behind all of their arms and equipment.

The next day, Saltonstall finally decided to launch a naval attack against the British fort, but Collier's British relief fleet arrived and attacked the American ships.[30] Over the next two days, the American fleet fled upstream on the Penobscot River pursued by Collier. On August 13, an American officer was wounded by enemy fire.[24] Several vessels were scuttled or burned on August 13 and 14 along the way with the rest destroyed at Bangor. In the 18th century there were rapids at Bangor at the approximate location of the old Water Works. The surviving crews then fled overland back to Boston with virtually no food or ammunition.


Over the course of the siege, Colonel David Stewart claims the British garrison suffered 25 killed and 34 wounded.[3] Stewart gives no figures for captured or missing but 26 prisoners are known to have been taken by the Americans.[4]

Apart from the 100 men killed and wounded during the assault of July 28, the known American casualties throughout the siege came to 12 killed, 16 wounded and one captured, in addition to "several wounded" on August 4. This adds up to at least 130 killed and wounded. The History of Penobscot says that "our whole loss of men was probably not less than 150".[31] The chaotic retreat however, brought the American loss up to 474 killed, wounded, captured or missing.[5]


A committee of inquiry blamed the American failure on poor coordination between land and sea forces and on Commodore Saltonstall's failure to engage the British naval forces. Saltonstall was declared to be primarily responsible for the debacle, and he was court-martialed, found guilty, and dismissed from military service. Paul Revere, who commanded the artillery in the expedition, was accused of disobedience and cowardice. This resulted in his dismissal from the militia, even though he was later cleared of the charges. Peleg Wadsworth, who mitigated the damage by organizing a retreat, was not charged in the court martial.

A year later the British Cabinet formally approved the New Ireland project on August 10, 1780, and King George III gave his assent the following day to the proposal to separate “the country lying to the northeast of the Piscataway [Piscataqua] River” from the province of Massachusetts Bay in order to establish “so much of it as lies between the Sawkno [Saco] River and the St. Croix, which is the southeast [sic] boundary of Nova Scotia into a new province, which from its situation between the New England province and Nova Scotia, may with great propriety be called New Ireland.”[32] Pursuant to the terms of the 1783 Peace of Paris all British forces then evacuated Fort George (followed by some 600 Loyalists who removed from the area to St. Andrews on Passamaquoddy Bay) and abandoned their attempts to establish New Ireland.[33] During the War of 1812, however, British forces again occupied Fort George (still calling the area New Ireland) from September 1814 to April 1815 and used it as a naval base before withdrawing again with the arrival of peace.[34][35][36] Full ownership of present-day Maine (principally the northeastern borders with New Brunswick) remained disputed until the Webster-Ashburton Treaty in 1842. The "District of Maine" was a part of Massachusetts until 1820 when it was admitted into the Union as the 23rd state.


In 1972 the Maine Maritime Academy and the Massachusetts Institute of Technology searched for and found the wreck of the Defence, a privateer that was part of the American fleet.[37] Evidence of scuttled ships was also found under the Joshua Chamberlain Bridge in Bangor and under the Bangor town dock, and several artifacts were recovered. Cannonballs were also reported to have been recovered during the construction of the concrete casements for the I-395 bridge in 1986.

The earthworks of Fort George still stand at the mouth of the Penobscot River in Castine, accompanied by concrete work added later by the Americans in the 19th century. Archaeological evidence of the expedition, including cannonballs and cannon, was located during an archaeological project in 2000–2001.

See also[edit]


  1. ^ a b Buker, p. 11
  2. ^ a b c Campbell, p. 498
  3. ^ a b Stewart, p. 115
  4. ^ a b c Buker, p. 176, note 67
  5. ^ a b Boatner, p. 852
  6. ^ a b c Bicheno, p.149
  7. ^ Buker, pp. 4–5
  8. ^ Sloan, Robert W. New Ireland: Men in Pursuit of a Forlorn Hope, 1779 -1784, Maine Historical Society Quarterly, Vol. 19 (Fall 1979 ), pp. 73-90
  9. ^ Faibisy, John D. Penobscot, 1779: The Eye of a Hurricane Maine Historical Society Quarterly, Vol. 19 (Fall 1979 ), pp. 91-117.
  10. ^ a b Buker, p. 5
  11. ^ Buker, p. 6
  12. ^ Buker, p. 7
  13. ^ Buker, p. 13
  14. ^ Buker, p. 15
  15. ^ Buker, p. 14
  16. ^ Bicheno, pp. 149–150
  17. ^ Buker, p. 37
  18. ^ A Naval History of the American Revolution: Chapter XII, The Penoboscot Expedition,
  19. ^ Buker, pp. 36,39–40
  20. ^ Buker, p. 41
  21. ^ a b Goold, quoting General Wadsworth
  22. ^ Buker, pp. 42–45
  23. ^ Williams and Chase, p. 89, quoting William D. Williamson's History of Maine. Williamson got this casualty information directly from General Wadsworth
  24. ^ a b c d e Goold, quoting William Moody’s Journal
  25. ^ Buker, p. 49
  26. ^ Buker, pp. 50–52
  27. ^ Buker, p. 56
  28. ^ Buker, p. 66
  29. ^ Campbell, p. 497
  30. ^ Bicheno, p. 152
  31. ^ Williams and Chase, p. 90
  32. ^ Burrage, Henry S. Maine in the Northeastern Boundary Controversy. Portland: Marks Printing House (Printed for State of Maine), 1919. p.21
  33. ^ Maine Historical Society Collections II, p. 400
  34. ^ Nova Scotia Royal Gazette, September 14, 1814, p. 3; Niles Weekly Register, October 6, 1814, p. 52
  35. ^ Whipple, Joseph History of Acadia, pp. 91-92 and 98
  36. ^ Young, George F.W. The British Capture & Occupation of Downeast Maine 1814-1815/1818, Chapter VI
  37. ^


Further reading[edit]

External links[edit]

Coordinates: 44°23′28″N 68°48′20″W / 44.391°N 68.8056°W / 44.391; -68.8056 (Fort George)