The Battle of Bunker Hill was fought on June 17, 1775, during the Siege of Boston in the first stage of the American Revolutionary War. The battle is named after Bunker Hill in Charlestown, Massachusetts, which was peripherally involved. It was the original objective of both the colonial and British troops, though the majority of combat took place on the adjacent hill, which became known as Breed's Hill.
On June 13, 1775, the leaders of the colonial forces besieging Boston learned that the British were planning to send troops out from the city to fortify the unoccupied hills surrounding the city, which would give them control of Boston Harbor. In response, 1,200 colonial troops under the command of William Prescott stealthily occupied Bunker Hill and Breed's Hill. They constructed a strong redoubt on Breed's Hill overnight, as well as smaller fortified lines across the Charlestown Peninsula.
By daybreak of June 17, the British became aware of the presence of colonial forces on the peninsula and mounted an attack against them. Two assaults on the colonial positions were repulsed with significant British casualties but the redoubt was captured on their third assault. The colonists retreated over Bunker Hill, leaving the British in control of the peninsula.
The battle was a victory for the British, but a costly one,
The battle led the British to adopt a more cautious planning and maneuver execution in future engagements, which was evident in the subsequent New York and New Jersey campaign. The costly engagement also convinced the British of the need to hire substantial numbers of Hessian auxiliaries to bolster their strength in the face of the new and formidable Continental Army.
Geography
thumb|left|1775 map of the Boston area (contains some inaccuracies)
Boston was situated on a peninsula at the time and was largely protected from close approach by the expanses of water surrounding it, which were dominated by British warships. In the aftermath of the battles of Lexington and Concord on April 19, 1775, the colonial militia of some 15,000 men had surrounded the town and besieged it under the command of Artemas Ward. They controlled the only land access to Boston itself (the Roxbury Neck), but they were unable to contest British domination of the waters of the harbor. The British troops occupied the city, a force of about 6,000 under the command of General Thomas Gage, and they were able to be resupplied and reinforced by sea.
However, the land across the water from Boston contained a number of hills which could be used to advantage. Artillery could be placed on the hills and used to bombard the city until the occupying army evacuated it or surrendered. It was with this in mind that Henry Knox led the noble train of artillery to transport cannon from Fort Ticonderoga.
The Charlestown Peninsula to the north of Boston started from a short, narrow isthmus known as the Charlestown Neck and extended about southeastward into Boston Harbor. Bunker Hill had an elevation of and lay at the northern end of the peninsula. Breed's Hill had a height of and was more southerly and nearer to Boston. The American soldiers were at an advantage due to the height of Breed's Hill and Bunker Hill, but it also essentially trapped them at the top. The settled part of the town of Charlestown occupied flats at the southern end of the peninsula. At its closest approach, less than separated the Charlestown Peninsula from the Boston Peninsula, where Copp's Hill was at about the same height as Breed's Hill. The British retreat from Concord had ended in Charlestown, but General Gage did not fortify the hills on the peninsula but instead withdrew his troops to Boston, turning the entire Charlestown Peninsula into a no man's land.
British planning
The British received reinforcements throughout May until they reached a strength of about 6,000 men. Generals William Howe, John Burgoyne, and Henry Clinton arrived on May 25 aboard . Gage began planning with them to break out of the city, finalizing a plan on June 12. This plan began with taking the Dorchester Neck, fortifying the Dorchester Heights, and then marching on the colonial forces stationed in Roxbury. Once the southern flank had been secured, the Charlestown heights would be taken, and the forces in Cambridge driven away. The attack was set for June 18.
On June 13, the Committee of Safety in Exeter, New Hampshire, notified the Massachusetts Provincial Congress that a New Hampshire gentleman "of undoubted veracity" had overheard the British commanders making plans to capture Dorchester and Charlestown. On June 15, the Massachusetts Committee of Safety decided that additional defenses needed to be erected. General Ward directed General Israel Putnam to set up defenses on the Charlestown Peninsula, specifically on Bunker Hill.
Prelude to battle
Fortification of Breed's Hill
upright=2.3|thumb|Array of American forces for the Battle of Bunker Hill
On the night of June 16, colonial Colonel William Prescott led about 1,200 men onto the peninsula in order to set up positions from which artillery fire could be directed into Boston. This force was made up of men from the regiments of Prescott, Putnam (the unit was commanded by Thomas Knowlton), James Frye, and Ebenezer Bridge. At first, Putnam, Prescott, and their engineer Captain Richard Gridley disagreed as to where they should locate their defense. Some work was performed on Bunker Hill, but Breed's Hill was closer to Boston and viewed as being more defensible, and they decided to build their primary redoubt there. Prescott and his men began digging a square fortification about on a side with ditches and earthen walls. The walls of the redoubt were about high, with a wooden platform inside on which men could stand and fire over the walls.
The works on Breed's Hill did not go unnoticed by the British. General Clinton was out on reconnaissance that night and was aware of them, and he tried to convince Gage and Howe that they needed to prepare to attack the position at daylight. British sentries were also aware of the activity, but most apparently did not think it cause for alarm. A sentry on board spotted the new fortification around 4 a.m. and notified his captain. Lively opened fire, temporarily halting the colonists' work. Admiral Samuel Graves awoke aboard his flagship , irritated by the gunfire that he had not ordered. He stopped it, only to have General Gage countermand his decision when he became fully aware of the situation in the morning. He ordered all 128 guns in the harbor to fire on the colonial position, along with batteries atop Copp's Hill in Boston. The barrage had relatively little effect, as the hilltop fortifications were high enough to frustrate accurate aiming from the ships and far enough from Copp's Hill to render the batteries there ineffective. The shots that did manage to land, however, were able to kill one American soldier and damage the entire supply of water brought for the troops.
The rising sun also alerted Prescott to a significant problem with the location of the redoubt: it could easily be flanked on either side.
British preparations
The British generals met to discuss their options. General Clinton had urged an attack as early as possible, and he preferred an attack beginning from the Charlestown Neck that would cut off the colonists' retreat, reducing the process of capturing the new redoubt to one of starving out its occupants. However, he was outvoted by the other three generals, who were concerned that his plan violated the convention of the time to not allow one's army to become trapped between enemy forces. Howe was the senior officer present and would lead the assault, and he was of the opinion that the hill was "open and easy of ascent and in short would be easily carried." General Burgoyne concurred, arguing that the "untrained rabble" would be no match for their "trained troops". Orders were then issued to prepare the expedition.
General Gage surveyed the works from Boston with his staff, and Loyalist Abijah Willard recognized his brother-in-law Colonel Prescott. "Will he fight?" asked Gage. "As to his men, I cannot answer for them," replied Willard, "but Colonel Prescott will fight you to the gates of hell." Prescott lived up to Willard's word, but his men were not so resolute. When the colonists suffered their first casualty, Prescott gave orders to bury the man quickly and quietly, but a large group of men gave him a solemn funeral instead, with several deserting shortly thereafter. However, while crossing the river, Howe noted the large number of colonial troops on top of Bunker Hill. He believed these to be reinforcements and immediately sent a message to Gage, requesting additional troops. He then ordered some of the light infantry to take a forward position along the eastern side of the peninsula, alerting the colonists to his intended course of action. The troops then sat down to eat while they waited for the reinforcements.
thumb|upright=1.25|The first British attack on Bunker Hill; shaded areas are hills
Colonists reinforce their positions
Prescott saw the British preparations and called for reinforcements. Among the reinforcements were Joseph Warren, the popular young leader of the Massachusetts Committee of Safety, and Seth Pomeroy, an aging Massachusetts militia leader. Both of these men held commissions of rank, but chose to serve as infantry. Colonel Stark placed a stake about in front of the fence and ordered that no one fire until the British regulars passed it. Further reinforcements arrived just before the battle, including portions of Massachusetts regiments of Colonels Brewer, Nixon, Woodbridge, Little, and Major Moore, as well as Callender's company of artillery.
Confusion reigned behind the Colonial lines. Many units sent toward the action stopped before crossing the Charlestown Neck from Cambridge, which was under constant fire from gun batteries to the south. Others reached Bunker Hill, but then were uncertain where to go from there and just milled around. One commentator wrote of the scene that "it appears to me there never was more confusion and less command." General Putnam was on the scene attempting to direct affairs, but unit commanders often misunderstood or even disobeyed orders.
British assault
thumb|upright=1.25|The second British attack on Bunker Hill
By 3 p.m., the British reinforcements had arrived, which included the 47th Regiment of Foot and the 1st Marines, and the British were ready to march. Brigadier General Pigot's force were gathering just south of Charlestown village, and they were already taking casualties from sniper fire from the settlement. Howe asked Admiral Graves for assistance in clearing out the snipers. Graves had planned for such a possibility and ordered a carcass fired into the village, and then sent a landing party to set fire to the town. The smoke billowing from Charlestown lent an almost surreal backdrop to the fighting, as the winds were such that the smoke was kept from the field of battle.
First attack
General Howe led the light infantry companies and grenadiers in the assault on the American left flank along the rail fence, expecting an easy effort against Stark's recently arrived troops. His light infantry were set along the narrow beach, in column formation, in order to turn the far left flank of the colonial position. The grenadiers were deployed in the center, lining up four deep and several hundred across. Pigot was commanding the 5th, 38th, 43rd, 47th, and 52nd regiments, as well as Major Pitcairn's Marines; they were to feint an assault on the redoubt. Just before the British advanced, the American position along the rail fence was reinforced by two pieces of artillery from Bunker Hill.
Howe had intended the advance to be preceded by an artillery bombardment from the field pieces present, but it was soon discovered that these cannon had been supplied with the wrong caliber of ammunition, delaying the assault. Attacking Breed's Hill presented an array of difficulties. The hay on the hillside had not been harvested, requiring that the regulars marched through waist-high grass which concealed the uneven terrain beneath. The pastureland of the hillside was covered with crisscrossing rail fences hampering the cohesion of marching formations. The regulars were loaded down with gear wholly unnecessary for the attack, and the British troops were overheating in their wool uniforms under the heat of the afternoon sun, compounded by the nearby inferno from Charlestown.
The colonists withheld their fire until the regulars were within at least 50 paces of their position. As the regulars closed in range, they suffered heavy casualties from colonial fire. The colonists benefited from the rail fence to steady and aim their muskets, and enjoyed a modicum of cover from return fire. Under this withering fire, the light companies melted away and retreated, some as far as their boats. James Abercrombie, commanding the Grenadiers, was fatally wounded. Pigot's attacks on the redoubt and breastworks fared little better; by stopping and exchanging fire with the colonists, the regulars were fully exposed and suffered heavy losses. They continued to be harried by snipers in Charlestown, and Pigot ordered a retreat after seeing what happened to Howe's advance. By the time the first attack had petered out, 96 British regulars had been killed.
Second attack
The regulars reformed on the field and marched out again, this time navigating a field strewn with dead and wounded comrades. This time, Pigot was not to feint; he was to assault the redoubt directly, possibly without the assistance of Howe's force. Howe advanced against Knowlton's position along the rail fence, instead of marching against Stark's position along the beach. The outcome of the second attack was very much the same as the first. One British observer wrote, "Most of our Grenadiers and Light-infantry, the moment of presenting themselves lost three-fourths, and many nine-tenths, of their men. Some had only eight or nine men a company left." Pigot's attack did not enjoy any greater success than Howe, and he ordered a retreat after almost 30 minutes of firing ineffective volleys at the colonial position. The second attack had failed.
Meanwhile, confusion continued in the rear of the colonial forces. General Putnam tried with limited success to send additional troops from Bunker Hill to the forward positions on Breed's Hill to support the embattled regiments. One colonial observer wrote to Samuel Adams afterwards, "it appears to me that there was never more confusion and less command". Some companies and leaderless groups of men moved toward the field; others retreated. They were running low on powder and ammunition, and the colonial regiments suffered from a hemorrhage of deserters. By the time that the third attack came, there were only 700–800 men left on Breed's Hill, with only 150 in the redoubt. Connecticut's Captain John Chester saw an entire company in retreat and ordered his company to aim muskets at them to halt the retreat; they turned about and headed back to the battlefield.
thumb|upright=1.25|The third and final British attack on Bunker Hill
The British rear was also in disarray. Wounded soldiers that were mobile had made their way to the landing areas and were being ferried back to Boston, while the wounded lying on the field of battle were the source of moans and cries of pain.
Third attack
Howe sent word to Clinton in Boston for additional troops. Clinton had observed the first two attacks and sent around 400 men from the 2nd Marines and the 63rd Foot, and followed himself to help rally the troops. In addition to these reserves, he convinced around 200 walking wounded to form up for the third attack.
The third assault was to concentrate squarely on the redoubt, with only a feint on the colonists' flank. Howe ordered his men to remove their heavy packs and leave all unnecessary equipment behind. He arrayed his forces in column formation rather than the extended order of the first two assaults, exposing fewer men along the front to colonial fire. The third attack was made at the point of the bayonet and successfully carried the redoubt; however, the final volleys of fire from the colonists cost the life of Major Pitcairn.
The defenders had run out of ammunition, reducing the battle to close quarters combat. The advantage turned to the British, as their troops were equipped with bayonets on their muskets, while most of the colonists were not. Colonel Prescott, one of the last men to leave the redoubt, parried bayonet thrusts with his normally ceremonial sabre. British forces killed thirty defenders in the melee and forced the rest into a retreat. It is during the retreat from the redoubt that Joseph Warren was shot in the face and killed. British ships rained iron shot down on the Neck, killing a number of Americans including Major Andrew McClary.
The retreat of much of the colonial forces from the peninsula was made possible in part by the controlled withdrawal of the forces along the rail fence, led by John Stark and Thomas Knowlton, which prevented the encirclement of the hill. Burgoyne described their orderly retreat as "no flight; it was even covered with bravery and military skill". It was so effective that most of the wounded were saved; most of the prisoners taken by the British were mortally wounded.
Aftermath
thumb|upright|The [[Bunker Hill Monument]]
thumb|upright|Ralph Farnham, one of the last survivors
The British had taken the ground but at a great loss; they had suffered 1,054 casualties (226 dead and 828 wounded), a 40% casualty rate, and a disproportionate number of these were from the elite light infantry and grenadiers. 19 officers had been killed. The casualty count was the highest suffered by the British in any single encounter during the entire war. General Clinton paraphrased Pyrrhus of Epirus, remarking in his diary that "A few more such victories would have shortly put an end to British dominion in America." British dead and wounded included 100 commissioned officers, a significant portion of the British officer corps in America. Much of General Howe's field staff was among the casualties. General Gage reported the following officer casualties in his report after the battle (listing lieutenants and above by name):
- 1 lieutenant colonel killed
- 2 majors killed, 3 wounded
- 7 captains killed, 27 wounded
- 9 lieutenants killed, 32 wounded
- 15 sergeants killed, 42 wounded
- 1 drummer killed, 12 wounded
Colonial losses were about 450 in total, of whom 138 were killed. Most of the colonial losses came during the withdrawal. Major Andrew McClary was technically the highest ranking colonial officer to die in the battle; he was hit by cannon fire on Charlestown Neck, the last person to be killed in the battle. He was later commemorated by the dedication of Fort McClary in Kittery, Maine. A serious loss to the Patriot cause, however, was the death of Joseph Warren. He was the President of Massachusetts' Provincial Congress, and he had been appointed a Major General on June 14. His commission had not yet taken effect when he served as a volunteer private three days later at Bunker Hill. Only 30 men were captured by the British, most of them with grievous wounds; 20 died while held prisoner. The colonials also lost numerous shovels and other entrenching tools, as well as five out of the six cannons that they had brought to the peninsula.
Political consequences
When news of the battle spread through the colonies, it was reported as a colonial loss, as the ground had been taken by the enemy, and significant casualties were incurred. George Washington was on his way to Boston as the new commander of the Continental Army, and he received news of the battle while in New York City. The report included casualty figures that were somewhat inaccurate, but it gave Washington hope that his army might prevail in the conflict.
The Massachusetts Committee of Safety sought to repeat the sort of propaganda victory that it won following the battles at Lexington and Concord, so it commissioned a report of the battle to send to England. Their report, however, did not reach England before Gage's official account arrived on July 20. His report unsurprisingly caused friction and argument between the Tories and the Whigs, but the casualty counts alarmed the military establishment, and forced many to rethink their views of colonial military capability. King George's attitude hardened toward the colonies, and the news may have contributed to his rejection of the Continental Congress' Olive Branch Petition, the last substantive political attempt at reconciliation. Sir James Adolphus Oughton, part of the Tory majority, wrote to Lord Dartmouth of the colonies, "the sooner they are made to Taste Distress the sooner will [Crown control over them] be produced, and the Effusion of Blood be put a stop to." About a month after receiving Gage's report, the Proclamation of Rebellion was issued in response. This hardening of the British position also strengthened previously weak support for independence among Americans, especially in the southern colonies. Gage wrote another report to the British Cabinet in which he repeated earlier warnings that "a large army must at length be employed to reduce these people" which would require "the hiring of foreign troops".
Analysis
General Dearborn published an account of the battle in Port Folio magazine years later, after Israel Putnam had died. Dearborn accused General Putnam of inaction, cowardly leadership, and failure to supply reinforcements during the battle, which subsequently sparked a major controversy among veterans of the war and historians.