The 6th Massachusetts served a third term in response to the emergency call for troops to defend Washington lasted 100 days from July to October 1864 during which they garrisoned Fort C. F. Smith in Arlington, Virginia and Fort Delaware near the mouth of the Delaware River.
The 6th Massachusetts served a third term in response to the call for troops to defend fortifications around Washington. During this term, which lasted 100 days from July to October 1864, the 6th Massachusetts garrisoned Fort C. F. Smith in Arlington, Virginia and Fort Delaware near the mouth of the Delaware River.