On this day in 1779, Massachusetts, without consulting either Continental political or military authorities, launches a 4,000-man naval expedition commanded by Commodore Dudley Saltonstall, Adjutant General Peleg Wadsworth, Brigadier General Solomon Lovell and Lieutenant Colonel Paul Revere. The expedition consisted of 19 warships, 24 transport ships and more than 1,000 militiamen. Their objective was to capture a 750-man British garrison at Castine on the Penobscot Peninsula, in what would later become Maine.
The expedition arrived on July 25 and proceeded to launch a series of inconclusive land attacks, leaving Patriot naval forces underutilized and allowing the British plenty of time to send for reinforcements. The land commander, Brig. Gen. Lovell, began to retreat at the arrival of Sir George Collier's seven British warships, expecting Saltonstall to engage in a naval battle. Saltonstall, however, did not fight for long: the naval engagement concluded in total disaster on August 14, when Saltonstall surprised both Patriot and British commanders by fleeing upriver and burning his own ships. The Patriots lost in excess of 470 men, as well as numerous Continental Navy and Massachusetts ships that were burned during the retreat. The British achieved their victory at a cost of only 13 men.
Saltonstall and Paul Revere later faced court martial because of the fiasco. Saltonstall lost his commission, but Revere won acquittal. By contrast, Peleg Wadsworth, who served as Revere's second-in-command, won acclaim for his performance in the engagement. He had organized the retreat, which was the only well-executed aspect of the mission. Wadsworth's family continued to play a celebrated role in American history: his grandson was the famed poet, Henry Wadsworth Longfellow. The failed Penobscot expedition was considered the worst naval disaster in American history until the surprise Japanese attack on Pearl Harbor in 1941, more than 160 years later.