In May, 1775, the British force in Boston had increased by fresh arrivals from England and Ireland to ten thousand men. The man-of-war Cerberus arrived on the 25th with Generals Howe, Clinton, and Burgoyne—three officers experienced in the military tactics of Europe, but little prepared for service here. They were surprised at the aspect of affairs, and Gage was reproached for his apparent supineness. However, unity of action was necessary, and the new-comers heartily co-operated with Gage in his plans, such as they were, for dispersing the rebel host that hemmed him in. He issued a proclamation on June 12 insulting in words and menacing in tone. It declared martial law; pronounced those in arms and their abettors “rebels, parricides of the Constitution,” and offered a free pardon to all who would forthwith return to their allegiance, except John Hancock and Samuel Adams, who were outlawed, and for whose apprehension as traitors a reward was offered. This proclamation, so arrogant and insulting, served only to exasperate the people. In the mean while several skirmishes had occurred between parties of the British regulars and the provincials, upon some of the cultivated islands that dot the harbor of Boston.

At this time (May, 1775) but little progress had been made by the Americans in erecting fortifications. Some breastworks had been thrown up at Cambridge, near the foot of Prospect Hill, and a small redoubt had been formed at Roxbury. The right wing of the besieging army, under General Thomas, was at Roxbury, consisting of four thousand Massachusetts troops, including four artillery companies, with field-pieces and a few heavy cannon. The Rhode Island forces, under Greene, were at Jamaica Plains, and near there was a greater part of General Spencer’s Connecticut regiment. General Ward commanded the left wing at Cambridge, which consisted of fifteen Massachusetts regiments, the battalion of artillery under Gridley, and Putnam’s regiment, with other Connecticut troops. Most of the Connecticut forces were at Inman’s farm. Paterson’s regiment was at the breastwork on Prospect Hill, and a large guard was stationed at Lechmere’s Point. Three companies of Gerrish’s regiment were at Chelsea; Stark’s regiment was at Medford, and Reid’s at Charlestown Neck, with sentinels reaching to Penny Ferry and Bunker Hill.

It was made known to the Committee of Safety that General Gage had fixed upon the night of June 18 to take possession of and fortify Bunker Hill and Dorchester Heights. This brought matters to a crisis, and measures were taken to perfect the blockade of Boston. The Committee of Safety ordered Colonel Prescott, with a detachment of one thousand men, including a company of artillery, with two field-pieces, to march at night and throw up intrenchments upon Bunker Hill, an eminence just within the peninsula of Charlestown, and commanding the great northern road from Boston, as well as a considerable portion of the town. Bunker Hill begins at the isthmus, and rises gradually for about three hundred yards, forming a round, smooth hill, sloping on two sides toward the water, and connected by a ridge of ground on the south with the heights now known as Breed’s Hill. This was a well-known public place, the name, “Bunker Hill,” being found in the town records and in deeds from an early period. Not so with “Breed’s Hill,” for it was not named in any description of streets previous to 1775, and appears to have been called after the owners of the pastures into which it was divided, rather than by the common name of Breed’s Hill. Thus, Monument Square was called Russell’s Pasture; Breed’s Pasture lay farther south, and Green’s Pasture was at the head of Green Street. The easterly and westerly sides of this height were steep. On the east, at its base, were brick-kilns, clay-pits, and much sloughy land. On the west side, at the base, was the most settled part of the town. Moulton’s Point, a name coeval with the settlement of the town, constituted the southeastern corner of the peninsula. A part of this tract formed what is called Morton’s Hill. Bunker Hill was one hundred and ten feet high, Breed’s Hill sixty-two feet, and Moulton’s Hill thirty-five feet. The principal street of the peninsula was Main Street, which extended from the Neck to the ferry. A road ran over Bunker Hill, around Breed’s Hill, to Moulton’s Point. The westerly portions of these eminences contained fine orchards.

A portion of the regiments of Prescott, Frye, and Bridge, and a fatigue party of two hundred Connecticut troops with intrenching tools, paraded in the Cambridge camp at six o’clock in the evening. They were furnished with packs and blankets, and ordered to take provisions for twenty-four hours. Samuel Gridley’s company of artillery joined them, and the Connecticut troops were placed under the command of Thomas Knowlton, a captain in Putnam’s regiment, who was afterward killed in the battle on Harlem Heights. After an impressive prayer from the lips of President Langdon, of Harvard College, Colonel Prescott and Richard Gridley, preceded by two servants with dark lanterns, commenced their march, at the head of the troops, for Charlestown. It was about nine o’clock at night, the sky clear and starry, and the weather very warm. Strict silence was enjoined, and the object of the expedition was not known to the troops until they arrived at Charlestown Neck, where they were joined by Major Brooks, of Bridge’s regiment, and General Putnam. A guard of ten men was placed in Charlestown, and the main body marched over Bunker Hill. A council was held, to select the best place for the proposed fortification. The order was explicit, to fortify Bunker Hill; but Breed’s Hill being nearer Boston, and appearing to be a more eligible place, it was concluded to proceed to fortify it, and to throw up works, also, on Bunker Hill, to cover a retreat, if necessary, across Charlestown Neck. Colonel Gridley marked out the lines of the proposed fortifications, and, at about midnight, the men, having thrown off their packs and stacked their arms, began their perilous work—perilous, because British sentinels and British ships-of-war were almost within sound of their picks.

Officers and men labored together with all their might, with pickaxes and spades, and were cheered on in their work by the distant signals of safety—“All’s well!”—that came from the shipping and the sentinels at the foot of Copp’s Hill. It proclaimed that they were still undiscovered; and at every cry of “All’s well!” they plied their tools with increased vigor. When the day dawned, at about four o’clock, they had thrown up intrenchments six feet high; and a strong redoubt, which was afterward the admiration of the enemy, loomed up on the green height before the wondering eyes of the astonished Britons like a work of magic. The British officers could hardly be convinced that it was the result of a few hours’ labor only, but deemed it the work of days. Gage saw at once how foolish he had been in not taking possession of this strong point, as advised, while it was in his power to do so.

The fortification was first discovered at dawn, by the watchmen on board the British man-of-war Lively. Without waiting for orders, the captain put springs upon his cables, and opened a fire on the American works. The noise of the cannon aroused the sleepers in Boston, and when the sun arose on that bright morning, every eminence and roof in the city swarmed with people, astonished at the strange apparition upon Breed’s Hill. The shots from the Lively did no harm, and, defended by their intrenchments, the Americans plied their tools in strengthening their works within, until called to lay aside the pick and shovel for gun and knapsack.

PLAN OF THE REDOUBT ON BREED’S HILL

On June 17 Admiral Graves, the naval commander at Boston, ordered the firing to cease; but it was soon renewed, not only by the shipping, but from a battery of six guns upon Copp’s Hill in the city. Gage summoned a council of war early in the morning. As it was evident that the Americans were rapidly gaining strength, and that the safety of the town was endangered, it was unanimously resolved to send out a force to drive them from the peninsula of Charlestown and destroy their works on the heights. It was decided, also, to make the attack in front, and preparations were made accordingly. The drums beat to arms, and Boston was soon in a tumult. Dragoons galloping, artillery trains rumbling, and the marching and countermarching of the regulars and loyalists, together with the clangor of the church bells, struck dismay into many a heart before stout in the presence of British protectors. It is said that the danger which surrounded the city converted many Tories into patriots; and the selectmen, in the midst of that fearful commotion, received large accessions to their list of professed friends from the ranks of the timid loyalists.

Toward noon between two and three thousand picked men from the British army, under the command of General Sir William Howe and General Pigot, embarked in twenty-eight barges, part from the Long Wharf and some from the North Battery, in Boston, and landed at Morton’s, or Moulton’s Point, beyond the eastern foot of Breed’s Hill, covered by the guns of the Falcon and other vessels.