Fort Devens is a reservist United States military installation in the towns of Ayer and Shirley, in Middlesex County and Harvard in Worcester County in the U.S. state of Massachusetts. It was named after jurist and Civil War general Charles Devens. The nearby Devens Reserve Forces Training Area is located in Lancaster. Although closed in 1996, the fort was reopened the next day as the Devens Reserve Forces Training Area. In 2007, the area was renamed Devens, Massachusetts.[citation needed]