Teenagers were critical to the American victory in the Revolutionary War. Over half of the colonial population was under the age of 16. A draft of all boys between the ages of 16 and 19 was enacted to fill the ranks of the Continental Army, leaving their sisters to fill their places at home. These circumstances meant that teenagers played an essential role not only in combat but also on the home front. Israel Trask joined the militia at the age of 10; by the time he turned 12 he was serving at sea. Abigail Foote, a 15-year-old from Connecticut, wove cloth, sewed clothes, weeded the garden and...