The 2nd (Seaham) Durham Artillery Volunteer Corps was a part-time unit of Britain's Royal Artillery raised in County Durham by the Vane-Tempest family during an invasion crisis in 1860. It became a permanent part of the Volunteer Force and later the Territorial Force, and fought as field artillery on the Western Front in World War I. Before World War II it became an anti-aircraft unit that served in the Battle of Britain, the Blitz and in the Far East where it converted to medium artillery in the Burma Campaign. Postwar, it continued to serve in the air defence role in the Territorial Army until 1955.