The site of a possible Second World War Light Anti Aircraft (LAA) battery seen at the northern edge of Allhallows Marshes. The site could be seen as linear clusters of at least 17 pale patches in the marshes where temporary structures may have stood. Each patch/ouline was typically between 3m and 4m across. The main alignment extended for over 130m MMW-SSE and had mirrored patterns in the arrangement and shape of the elements in the north and south halves. A second smaller alignment of four marks was seen to the east of and parallel to the southern part of the first main aligment. To the west of the northern half of this main aligment were two adjacent and larger marks. It is possible that these aligments are the locations of anti-aircraft guns and associated buildings and structures, many of which were established in the summer of 1944 as part of the Diver Box defences. A number of LAA 'Diver' batteries are known to have been established on the Hoo Peninsula, but many have not be located. These features could only be seen on RAF aerial photographs taken in May 1946 and were mapped as part of the English Heritage: Hoo Peninsula Landscape Project.