This is part of the Total War series that began with Rome. The games feature political, mechanical/industrial strategy as well as military strategy. You have advisors, spies, even weather to contend with. Lexington and Concord almost certainly exist in this game, but you can do anything you want as far as strategy. For instance, I'd be tempted to send a team of diplomats to Lexington and invite all the rebels to Boston for a meeting. Then of course I'd shoot them all.