Ordnance QF 13 pounder Mk III anti-aircraft gun also known as 13 pounder 6 cwt was an early British improvisation in First World War and I adapted the 13 pounder field gune to antiaircraft use.
The Ordnance QF 13 pounder Mk III anti-aircraft gun, also known as 13 pounder 6 cwt, was an early British improvisation in World War I to adapt the 13 pounder field gun to anti-aircraft use.