The War begins
The first shots of the war were fired in Massachusetts. Here the most rebellious of the colonies was faced by General Thomas Gage, Governor of Massachusetts and commander-in-chief of all British troops in North America. Lord North had considered the colony to be in revolt from February, but failed to appreciate either the scale of the discontent in Massachusetts or that it was also present across the other colonies.
On 19 April 1775 Gage despatched a column to seize an arms cache thought to be at the town of Concord, only 16 miles from Boston. Bad news of the expedition came, and at Lexington the British encountered a small force of the American militia. Nobody knows which side fired the first shots of the war, but the militia retreat and the British continued to Concord. Howeverthe return to Boston revealed the scale of the revolt and the weakness of the British position. Outnumbered by hostile forces, the British column was being slowly destroyed by sniping until it met up with a relief force at Lexington and was able to return relatively safely to Boston.
News of the fighting spread quickly, and Gage soon found himself besieged in Boston by an irregular but large force, which quickly dug itself in. Meanwhile, Gage was waiting for reinforcements. On 26 May they arrived, led by three major-generals who were to play an important part in the war - William Howe, Henry Clinton and John Burgoyne.
Encouraged by his reinforcements, Gage decided to strengthen his position by capturing key hills that overlooked Boston on its island, and threatened the harbour. The Americans learnt of this plan, and fortified Breed's Hill on the Charlestown peninsular north of the harbour. The resulting battle of Bunker Hill (17 June 1775) was a disaster for the British. Although they did manage to capture the American positions, it was at the cost of half of their force killed or wounded.
Bunker Hill effectively knocked the main British army out of the war for the next year. For nine months it remained in Boston, now commanded by Howe, who failed to appreciate the weakness of the American forces facing him.