George Washington's Engineer: How Rufus Putnam Won the Siege of Boston without Firing a Shot

In January 1776, George Washington had a problem: the British army controlled the city of Boston. The colonial army needed to force the British to leave. But how?

Washington had a solution: ask his engineer Rufus Putnam to solve the problem. They needed to take control of the high ground, Dorchester Heights, just south of Boston. They could place cannons there to bombard the British army.

Cannons on Dorchester Heights meant the colonials needed to build walls to protect their soldiers. But ...