The Ordnance QF 18-pounder was a British field gun used during World War I and into World War II. Introduced in 1904, it was designed to fire a 18-pound (8.2 kg) shell at a range of approximately 6,500 yards (5,900 meters). Its versatility and reliability made it a key artillery piece for British forces. The 18-pounder was known for its quick rate of fire and effective high-explosive shells, which were crucial in supporting infantry operations. It was often towed by horses or vehicles and could be deployed in various terrains, making it a vital asset on the battlefield.