Scarcely had Sir George Collier, who had accompanied Clinton up the Hudson to take possession of Stony Point, returned to New York, when he was informed that a fleet of armed vessels with transports and troops had sailed from Boston to attack a post which General M'Lean was establishing at Penobscot in the eastern part of the province of Massachusetts bay. He immediately got ready for sea that part of the naval force which was at New York, and on the 3d of August sailed to relieve the garrison of Penobscot. In the month of June (1779) General M'Lean, who commanded the royal troops in Nova Scotia, arrived in the bay of Penobscot with nearly 700 men, in order to establish a post which might at once be a means of checking the incursions of the Americans into Nova Scotia and of supplying the royal yards at Halifax with ship timber, which abounded in that part of the country. This establishment alarmed the government of Massachusetts bay, which resolved to dislodge M'Lean, and, with great promptitude, equipped a fleet and raised troops for that purpose. The fleet, which consisted of fifteen vessels of war, carrying from thirty-two to twelve guns each with transports, was commanded by Commodore Saltonstall; the army, amounting to between three and four thousand militia, was under the orders of General Lovell. General M'Lean chose for his post a peninsula on the east side of Penobscot bay, which is about seven leagues wide and seventeen deep, terminating at the point where the river Penobscot flows into it. M'Lean's station was nine miles from the bottom of the bay. As that part of the country was then an unbroken forest he cleared away the wood on the peninsula and began to construct a fort in which he was assisted and protected by the crews of three sloops-of-war which had escorted him thither. M'Lean heard of the expedition against him on the 21st of July (1779), when he had made little progress in the erection of his fort. On the 25th the American fleet appeared in the bay, but, owing to the opposition of the British sloops-of-war and to the bold and rugged nature of the shore, the troops did not effect a landing until the 28th. This interval M'Lean improved with such laborious diligence that his fortifications were in a state of considerable forwardness. Lovell erected a battery within 750 yards of the works, and for nearly a fortnight a brisk cannonade was kept up and preparations were made to assault the fort. But, on the 13th of August (1779), Lovell was informed that Sir George Collier with a superior naval force had entered the bay; therefore in the night he silently embarked his troops and cannon, unperceived by the garrison, which was every moment in expectation of being assaulted.