The BL5.5-inch gun was a British artillery gun introduced during the middle of the Second World War to equip medium batteries. In January 1939 a specification
The BL 15-inch Mark I succeeded the BL13.5-inch Mk V naval gun. It was the first British 15-inch (380 mm) gun design and the most widely used and longest
The Ordnance BL 60-pounder was a British 5-inch (127 mm) heavy field gun designed in 1903–05 to provide a new capability that had been partially met by