With the arrival of
General Thomas Gage as
governor of the
colony in 1774, the provincial assembly was dissolved, but reformed itself into the
Massachusetts Provincial Congress. Lincoln continued to win election to this body, and was placed on committees overseeing militia organization and supply, a position that came to be of utmost importance when the
American Revolutionary War broke out with the
Battles of Lexington and Concord in April 1775. He was then appointed to the congress' committee of safety, and also was elected to its executive council, which exercised executive authority over the province outside
besieged Boston. He was deeply involved in ensuring that supplies of all sorts reached the nascent
Continental Army outside
Boston, procuring supplies from blankets to gunpowder.
Defense of New York In January 1776, Lincoln was promoted to
major general of the Massachusetts militia, overseeing the coastal defenses of the state. After the British
evacuated Boston, he and
Continental Army General Artemas Ward oversaw attempts to improve the state's coastal fortifications, and he was ordered to hold the state's militia brigades in readiness in case the British returned. In May 1776 he directed the state forces that successfully drove the last
Royal Navy ships from
Boston Harbor. Despite his lack of combat experience, Lincoln began lobbying state representatives to the
Continental Congress for a
Continental Army officers commission, anticipating that the aging and ill General Ward might soon step down. The idea was generally well received, with one representative writing that Lincoln was "a good man for a Brigadier General" and "a man of abilities", even though he had not "had much experience". While a Continental commission was not immediately forthcoming, Lincoln was placed in command of a brigade of militia the state sent to join General
George Washington at
New York Town in September 1776. Lincoln's troops secured the Continental retreat to
White Plains, New York, and were in the main Continental formation during the subsequent
Battle of White Plains in October 1776; this portion of the troops saw no action in the battle. The enlistment terms of his men expiring, Lincoln returned briefly to Massachusetts to take command of new recruits for the coming year's campaigns. Based on a recommendation from General Washington as "a gentleman well worthy of notice in the Military Line", Congress commissioned Lincoln a major general in the Continental Army on February 14, 1777. Lincoln's first command was that of a forward outpost at
Bound Brook, New Jersey, only from British sentries outside
New Brunswick. He established his headquarters at the nearby
Van Horne House. Lincoln returned to Washington's main army. He led a large portion of the Army south from Head of Elk Maryland to
Hampton, Virginia, to march to the west to Yorktown where the British were encamped. Lincoln played a major role in the
siege of Yorktown and the surrender of Lord Cornwallis on October 19, 1781. Cornwallis plead illness, and so did not attend the surrender ceremony, choosing instead to send his second-in-command, the Irish general
Charles O'Hara. General Washington refused to accept Cornwallis' sword from O'Hara, directing O'Hara to present it instead to Lincoln, Washington's own second-in-command.
Secretary at War (1781–1783) From 1781 to late 1783, Lincoln served as the first
United States secretary at war. He was appointed by the
Confederation Congress under the
Articles of Confederation and Perpetual Union, adopted 1781. He was succeeded in the post by
Continental Army artillery chief,
Major General Henry Knox, (who later continued in the position as the first United States secretary of war from 1789 to 1795 under the new
Federal Constitution of 1787, during
George Washington's two terms as the first
president of the United States). He was elected a Fellow of the
American Academy of Arts and Sciences in 1781. While Secretary at War, Lincoln was admitted as an original member of The
Society of the Cincinnati in the state of
Massachusetts and was elected as the first president of the Massachusetts Society on June 9, 1783, subsequently supporting the election of George Washington as the first President General of The Society of the Cincinnati on June 19. ==Post-war politics==