Manthorpe
Happisburgh coastal battery, a Second World War emergency battery built as part of Eastern Command's coastal defences. It was built of brick, concrete, and iron and was constructed in 1940. It was built to support two 4.7-inch ex-naval guns and manned by 353 Coast Battery Royal Artillery. In February 1943 the battery was reduced to Home Guard manning and in April 1944 to care and maintenance. 