Which army dug into the hills around Boston?

The Continental Army, under the command of General George Washington, dug into the hills around Boston during the Siege of Boston in the American Revolutionary War. This strategic positioning, particularly at locations like Bunker Hill and Breed's Hill, aimed to strengthen their defenses against the British Army, which occupied the city. The fortifications played a crucial role in the early battles of the war, showcasing the determination of the colonial forces.