<human>:  Was Alaska part of the Northern Army during the Civil War?
<bot>: No, Alaska was not part of the Northern Army during the Civil War. It was purchased by the United States in 1867. The Civil War was from 1861 - 1865. The Northern Army consisted of soldiers from states north of the Mason-Dixon line. Alaska did not become part of the United States until 1867. So Alaska was not part of the Northern Army during the Civil War. It was purchased in 1867.