The 2nd Rhode Island Regiment was authorized on 6 May 1775 under Colonel Daniel Hitchcock in the Rhode Island Army of Observation and was organized on 8 May 1775 as eight companies of volunteers from Providence County of the colony of Rhode Island. As part of a brigade organized under Nathanael Greene, the unit participated in the Siege of Boston during the remainder of 1775. Some elements accompanied Benedict Arnold's expedition to Quebec late in the year. The unit was renamed the 11th Continental Regiment on the first day of 1776.

The siege of Boston was the opening phase of the American Revolutionary War. In the siege, American patriot militia led by newly-installed Continental Army commander George Washington prevented the British Army, which was garrisoned in Boston, from moving by land. Both sides faced resource, supply, and personnel challenges during the siege. British resupply and reinforcement was limited to sea access, which was impeded by American vessels. The British ultimately abandoned Boston after eleven months, moving their troops and equipment north, to Nova Scotia.