In April 1775, the British commander in Boston sent a detachment of troops to, Lexington and Concord. Their plan was to seize stocks of colonial gunpowder, and to capture the "rebel" ringleaders, Samuel Adams and John Hancock. At Lexington, 8 Americans were shot , and killed. This incident was labelled as the "Lexington Massacre." When the British went to Concord, they were met with American resistance, and had over 300 casualties and 70 deaths. Because of this, the British realized that they had a war, rather than a rebellion, on their hands.