William Howe, 5th Viscount Howe in the context of Battle of the Plains of Abraham

The Philadelphia campaign (1777–1778) was a British military campaign during the American Revolutionary War designed to gain control of Philadelphia, the Revolutionary-era capital where the Second Continental Congress convened, formed the Continental Army, and appointed George Washington as its commander in 1775, and later authored and unanimously adopted the Declaration of Independence the following year, on July 4, 1776, which formalized and escalated the war.

In the Philadelphia campaign, British General William Howe failed to draw the Continental Army under George Washington into a battle in North Jersey. Howe then embarked his army on transports, and landed them at the northern end of the Chesapeake Bay, where they began advancing north toward Philadelphia. Washington prepared defenses against Howe's movements at Brandywine Creek, but was flanked and beaten back in the Battle of Brandywine on September 11, 1777. After further skirmishes and maneuvers, Howe entered and occupied Philadelphia. Washington then unsuccessfully attacked one of Howe's garrisons at Germantown prior to retreating to Valley Forge for the winter, where he and 12,000 faced the harshest winter of the war, including insufficient food and clothing.

The New York and New Jersey campaign in 1776 and the winter months of 1777 was a series of American Revolutionary War battles for control of the Port of New York and the state of New Jersey, fought between British forces under General Sir William Howe and the Continental Army under General George Washington. Howe was successful in driving Washington out of New York, but overextended his reach into New Jersey, and ended the New York and New Jersey campaign in January 1777 with only a few outposts near New York City under British control. The British held New York Harbor for the rest of the Revolutionary War, using it as a base for expeditions against other targets.

Landing unopposed on Staten Island on July 3, 1776, Howe had assembled an army that included components that had withdrawn from Boston in March following the British failure to hold that city, combined with additional British troops, and Hessian troops hired from several German principalities. Washington's Continental Army included New England soldiers and regiments from the Thirteen Colonies as far south as the Colony of Virginia. Landing on Long Island in August, Howe defeated Washington in the largest battle of the war in North America, but the Continental Army was able to regroup and make an orderly and covert retreat to Manhattan that night under a cover of darkness and fog. Washington suffered a series of further defeats in Manhattan but prevailed in a skirmish at the Battle of Harlem Heights and eventually withdrew his troops successfully to White Plains, New York. Howe, meanwhile, returned to Manhattan and captured those forces Washington had left on the island.

The Battle of Brandywine, also known as the Battle of Brandywine Creek, was fought between the American Continental Army of General George Washington and the British Army of General Sir William Howe on September 11, 1777, as part of the American Revolutionary War (1775–1783). The forces met near Chadds Ford, Pennsylvania. More troops fought at Brandywine than at any other battle of the American Revolution. It was also the second longest single-day battle of the war, after the Battle of Monmouth, with continuous fighting for 11 hours. As Howe moved to take Philadelphia, then the American capital, the British forces routed the Continental Army and forced them to withdraw, first, to the City of Chester, Pennsylvania, and then northeast toward Philadelphia.

Howe's army departed from Sandy Hook, New Jersey, across New York Bay from the occupied town of New York City on the southern tip of Manhattan Island, on July 23, 1777, and landed near present-day Elkton, Maryland, at the point of the "Head of Elk" by the Elk River at the northern end of the Chesapeake Bay, at the southern mouth of the Susquehanna River. Marching north, the British Army brushed aside American light forces in a few skirmishes. General Washington offered battle with his army posted behind Brandywine Creek, off the Christina River. While part of his army demonstrated in front of Chadds Ford, Howe took the bulk of his troops on a long march that crossed the Brandywine far beyond Washington's right flank. Due to poor scouting, the Americans did not detect Howe's column until it reached a position in rear of their right flank. Belatedly, three divisions were shifted to block the British flanking force at Birmingham Friends Meetinghouse and School, a Quaker meeting house.

The Battle of Germantown was a major engagement in the Philadelphia campaign of the American Revolutionary War. It was fought on October 4, 1777, at Germantown, Pennsylvania, between the British Army led by Sir William Howe, and the American Continental Army under George Washington.

After defeating the Continental Army at the Battle of Brandywine on September 11, and the Battle of Paoli on September 20, Howe outmaneuvered Washington, seizing Philadelphia, the capital of the United States, on September 26. Howe left a garrison of some 3,000 troops in Philadelphia, while moving the bulk of his force to Germantown, then an outlying community to the city. Learning of the division, Washington determined to engage the British. His plan called for four separate columns to converge on the British position at Germantown. The two flanking columns were composed of 3,000 militia, while the center-left, under Nathanael Greene, the center-right under John Sullivan, and the reserve under Lord Stirling were made up of regular troops. The ambition behind the plan was to surprise and destroy the British force, much in the same way as Washington had surprised and decisively defeated the Hessians at Trenton. In Germantown, Howe had his light infantry and the 40th Foot spread across his front as pickets. In the main camp, Wilhelm von Knyphausen commanded the British left, while Howe himself personally led the British right.

The Battles of Saratoga were fought September 19 and October 7, 1777 over the same ground by the American Continental Army and the British Army near Saratoga, New York during the American Revolutionary War. The second battle ended with a decisive American victory, and the surrender of the British army there. The outcome greatly affected the course of the war, persuading France to enter the war as an American ally. In both battles, General John Burgoyne commanded the British forces, while General Horatio Gates oversaw the American force. Historian Edmund Morgan described Saratoga as "a great turning point of the war", because it won for Americans the foreign assistance from France, which was the last element needed for victory."

The British Army's campaign in New York was aimed at dividing New England from the middle and southern colonies. Burgoyne led an invasion army of 7,200 to 8,000 men southward from Canada through the Champlain Valley. Hoping to meet British forces marching northward from New York City and eastward from Lake Ontario, Burgoyne's goal was to take Albany, New York. The strategy began promisingly, but stalled due to logistical issues. British General William Howe never moved his forces north, and Brigadier General Barry St. Leger turned back his forces meant to arrive from the west, leaving Burgoyne surrounded by the Americans in upstate New York, 15 miles (24 km) short of his goal. Burgoyne fought two battles, which took place 18 days apart, on the same ground 9 miles (14 km) south of Saratoga, New York. In the first battle, at Freeman's Farm on September 19, Burgoyne won a tactical victory over the Continental Army at the cost of heavy casualties. The battle began with Burgoyne's attempt to flank the entrenched American position on Bemis Heights with some of his troops. American Major General Benedict Arnold anticipated the maneuver and placed significant forces in his way. Still, Burgoyne was able to gain the field. Skirmishes continued in the following days while Burgoyne waited in the hope that reinforcements would arrive from New York City.

The Battle of Long Island, also known as the Battle of Brooklyn and the Battle of Brooklyn Heights, was an action of the American Revolutionary War fought on August 27, 1776, at and near the western edge of Long Island in present-day Brooklyn. The British defeated the Continental Army and gained access to the strategically important Port of New York, which they held for the rest of the war. It was the first major battle to take place after the United States declared its independence on July 4, 1776, in Philadelphia. It was the largest battle of the Revolutionary War in terms of both troop deployment and combat.

After defeating the British in the siege of Boston on March 17, Continental Army commander-in-chief George Washington relocated his army to defend the port city of New York, located at the southern end of Manhattan Island. Washington understood the city's harbor would provide an excellent base for the Royal Navy, so he established defenses there and waited for the British to attack. In July, the British, under the command of General William Howe, landed a few miles across the harbor on the sparsely populated Staten Island, where they were reinforced by a fleet of ships in Lower New York Bay over the next month and a half, bringing their total force to 32,000 troops. Washington knew the difficulty in holding the city with the British fleet in control of the entrance to the harbor at the Narrows, and accordingly moved the bulk of his forces to Manhattan, believing it would be the first target.

The Battle of Fort Washington was fought in New York on November 16, 1776, during the American Revolutionary War between the United States and Great Britain. It was a British victory that gained the surrender of the remnant of the garrison of Fort Washington near the north end of Manhattan. It was one of the worst Patriot defeats of the war.

After defeating the Continental Army under Commander-in-Chief General George Washington at the Battle of White Plains, the British forces under the command of Lieutenant General William Howe planned to capture Fort Washington, the last American stronghold on Manhattan. General Washington issued a discretionary order to General Nathanael Greene to abandon the fort and remove its garrison, which then numbered 1,200 men but which later grew to 3,000, to New Jersey. Colonel Robert Magaw, acting commander of the fort, refused to abandon it, believing his troops would be able to defend it from the British. Howe's forces attacked the fort before Washington could arrive to assess the situation on November 16.

The office of Commander-in-Chief, North America was a military position of the British Army. Established in 1755 in the early years of the Seven Years' War, holders of the post were generally responsible for land-based military personnel and activities in and around those parts of North America that Great Britain either controlled or contested. The post continued to exist until 1775, when Lieutenant-General Thomas Gage, the last holder of the post, was replaced early in the American War of Independence. The post's responsibilities were then divided: Major-General William Howe became Commander-in-Chief, America, responsible for British troops from West Florida to Newfoundland, and General Guy Carleton became Commander-in-Chief, Quebec, responsible for the defence of the Province of Quebec.

This division of responsibility persisted after American independence and the loss of East and West Florida in the Treaty of Paris (1783). One officer was given the posting for Quebec, which later became the Commander-in-Chief of The Canadas when Quebec was divided into Upper and Lower Canada, while another officer was posted to Halifax with responsibility for military matters in the maritime provinces.