Until April 1814,
Great Britain was at
war against Napoleonic France, which limited British war aims in North America. Meanwhile, the British primarily used a defensive strategy and repelled American invasions of the Provinces of
Upper and
Lower Canada. The Americans gained naval control over
Lake Erie in 1813 and seized parts of western Lower Canada. In the
Mississippi Territory, in an area in modern central
Alabama, General
Andrew Jackson destroyed the military strength of the
Creek nation at the
Battle of Horseshoe Bend in 1814. Although Great Britain was unwilling to draw military forces from the war with France, it still enjoyed a naval superiority on the ocean, and vessels of
North America and West Indies Squadron, based at
Bermuda,
blockaded American ports on the Atlantic coast throughout the war, strangling the American economy. Initially, the northeastern ports were spared this blockade as public sentiments in New York and
New England were against the war. The
Royal Navy and
Royal Marines also occupied American coastal islands and landed military forces for raids along the coast, especially around the
Chesapeake Bay, encouraging
enslaved Blacks to defect to the Great Britain and recruiting them into the
Corps of Colonial Marines. Following the defeat of
Napoleon in early 1814, the British adopted a more aggressive strategy, intended to compel the United States to negotiate a peace that restored the pre-war
status quo. Thousands of seasoned British soldiers were deployed to
British North America. Most went to the Canadas to re-enforce the defenders. The
British Army, Canadian
militias, and their
First Nations allies drove the American invaders back into the United States. Without naval control of the
Great Lakes they were unable to receive supplies, resulting in the British failure to capture
Plattsburgh in the
Second Battle of Lake Champlain and their withdrawal from US territory. A
brigade under the command of
Major General Robert Ross was sent in early July with several naval vessels to join the forces already operating from Bermuda. The combined forces were to be used for diversionary raids along the Atlantic coast, intended to force the Americans to withdraw forces from Canada. Some historians claim that they were under orders not to carry out any extended operations and were restricted to targets on the coast. An ambitious raid was planned as the result of a letter sent to Bermuda on June 2 by Sir
George Prevost,
Governor General of
The Canadas, who called for retaliation in response to the "wanton destruction of private property along the north shores of Lake Erie" by American forces under Colonel John Campbell in May, the most notable being the
Raid on Port Dover. Prevost argued that, The letter was considered by Ross and Vice-Admiral Sir
Alexander Cochrane, who had replaced Sir
John Borlase Warren earlier that year as the Commander-in-Chief of the
North America and West Indies Station of the Royal Navy, headquartered at
Admiralty House in Bermuda, in planning how to use their forces. Cochrane's junior, Rear Admiral
George Cockburn, had been commanding ships of the squadron in the operations on the Chesapeake Bay since the previous year. On June 25 he wrote to Cochrane stressing that the defenses there were weak, and he felt that several major cities were vulnerable to attack. Cochrane suggested attacking Baltimore,
Washington and
Philadelphia. On July 17, Cockburn recommended Washington as the target, because of the comparative ease of attacking the national capital and "the greater political effect likely to result". On July 18, Cochrane ordered Cockburn that to "deter the enemy from a repetition of similar outrages..." You are hereby required and directed to "destroy and lay waste such towns and districts as you may find assailable". Cochrane instructed, "You will spare merely the lives of the unarmed inhabitants of the United States". In August, the vessels in Bermuda sailed from the
Royal Naval Dockyard and
St. George's to join those already operating along the American Atlantic coast. After defeating a
United States Navy gunboat flotilla, a military force totaling 4,370, composed of British Army, Royal Marines, and Royal Navy detachments for shore service, under Ross was landed in Virginia. After beating off an American force of 1,200 on the 23rd, on the 24th they attacked the prepared defenses of the main American force of roughly 6,400 US Army soldiers, militiamen, US Marines, and US Navy sailors in the
Battle of Bladensburg. Despite the considerable disadvantage in numbers, as
standard military logic dictates that a three-to-one advantage is needed in carrying out an attack on prepared defenses, and sustaining heavy casualties, the British force routed the American defenders and cleared the path into Washington, D.C.. President
James Madison and the entire government fled the city, and went north, to the town of
Brookeville, Maryland. On August 24, 1814, British troops led by Rear Admiral Cockburn and Major General Ross entered Washington and captured the city with a force of 4,500 "battle-hardened" men, during the
burning of Washington. British troops, commanded by Ross, set fire to a number of public buildings, including the
White House and the
United States Capitol. Extensive damage to the interiors and the contents of both were reported. The British forces returned to their ships. The British sent a fleet up the
Potomac to cut off Washington's water access and threaten the prosperous ports of
Alexandria, just downstream of Washington, and
Georgetown, just upstream. The mere appearance of the fleet cowed American defenders into fleeing from
Fort Warburton without firing a shot, and undefended Alexandria surrendered. The British spent several days looting hundreds of tons of merchandise from city merchants. They then turned their attention north to Baltimore, where they hoped to strike a powerful blow against the demoralized Americans. Baltimore was a busy port and was thought by the British to harbor many of the
privateers who were raiding British shipping. The British planned a combined operation, with Ross launching a land attack at
North Point, and Vice-Admiral Cochrane laying siege to
Fort McHenry, which was the point defensive installation in
Baltimore Harbor. Baltimore's defenses had been planned and overseen by the state militia commander, Major General
Samuel Smith. ==Opposing forces==