On March 5, 1770, Captain Thomas Preston and his soldiers shot and killed 5 townspeople. One of 5 was Crispus Attucks, a free half black half Native Amerian sailor. The event was used as anti-British propoganda leading to a huge trial for the soilders and Captain. The only punishment was a branded thumb for 2 soilders.
On April 19, 1775, 700 British troops and General Gage fought Captain John Parker and 70 militiamen in Lexington. The British continued to Concord and destroyed military supplies. With 4,000 minutemen surrounding the troops, the British retreated back to Boston and survived only because of help from 1,000 more troops. The British suffered a huge loss whereas the Minutemen lost few. (Lexington and Concord were some of the first battles of the war.)