Definition from Wiktionary, the free dictionary
- (military) the tactical firing position of artillery or naval guns
1917 July 1, “Third British Army, Artillery Instructions, No. 3 Notes on the Organization of a Battery for Active Operations”, Field Artillery Notes, number 4, page 53:
- The executive at the gun line is responsible for the drill and fire discipline of the battery.
1916 June 10, “The Mountain Gun and Mule Team”, Scientific American: Supplement, volume 81, number 2110, page 372:
- A mountain battery is divided into a "Gun Line" and an "Ammunition Line." Six guns and twelve ammunition-mules form the "Gun Line."
- 2007, Richard Boyer, Dictionary of Military terms, 3, London: A&C Black, ISBN 978-1-4081-0210-7, page 113:
- "Gun Line", Government of Canada Translation Bureau: 03 1998.