I found the information quoted below in the artillery forums but some of the information is incorrect. The two 14" Guns were one battery of the RM Siege Regiment at St Marys at Cliffe near Dover. They were never handed over to the Royal Artillery. In addition this battery also used an experimental gun called Bruce which was a 13.5" Gun Breech with an 8" gun barrel making it a super High Velocity weapon. The second Battery used three `WW! 13.5" Railway guns, which had been stored at Chilwell and recovered in 1939, these were eventually handed over to the RA in late 1943. In addition the siege regiment had anti aircraft guns at all gun sites as well as MG and ATG's for local defence. The RAF also had a spotter baloon section attached to the Regiment There were numerous artillery exchanges with German batteries throughout the war including the one mentioned below. Sorry to the gentleman who wrote the original text but I thought it might be better to clarify what the Regiment was and did. "COASTAL ARTILLERY. There were two 14” coastal guns at Dover. These had a range of 24 miles and they could fire heavy shells across the English Channel. They were normally used against shipping in the Channel, either firing on German coastal convoys or firing on German coastal batteries which interfered with British convoys. However they were used briefly in support of 3 Canadian Division during operations in the Pas de Calais area in September 1944. An Auster AOP spotted for them and 189 rounds were fired. These guns were reserve guns for the King George V class battleships. They were originally manned by Royal Marines but were handed over to the Royal Artillery. The first gun to be emplaced was named Winnie after Churchill and its partner was named Pooh. The standard shell weighed 1,586 lb and the maximum range was 47,250 yards. Also available were two 15” guns which had been intended for Penang but were installed at Dover. These fired a 1,938 lb shell to a range of 42,000 yards. This was just enough to reach the French coast. COAST OBSERVATION DETACHMENT. War Establishment III/313/1. March 1944. No3 Detachment is listed on the 21 Army Group Order of Battle. Presumably it was to direct the fire of coastal batteries. 12 X operator, fire control including serjeant bombardier lance bombardier 9 X gunner Cake? I Like Tanks. And currently quite keen on Xenforo as well."
