NHER 33702 (Monument record) - Second World War anti-aircraft battery, possible training site

February 1946. RAF aerial photograph shows four rectangular structures, probably walled and/or sunken of around 8m side lengths, with further subdivided structure around 15m x 4m to south-west. Probable military function as within semi-cleared plantation. Unlikely to be forestry activity (ie ponds) as too far from ride access. Unusual but could be anti-aircraft battery or searchlight battery for Brandon.
B. Cushion (NLA), 11 June 1998.

July 2008. Field visit.
Two of the sub-rectangular hollows were visible. They measured roughly 7-8m square. One is located within the recorded area of NHER 33702 (at TL 79822 88054, derived using a handheld GPS unit). The other is located just outside (at TL 79827 88048). It is probable the two other rectangular structures and the subdivided structure were concealed by vegetation.
D. Robertson (NLA), 2 September 2008.

February 2017. 'Brecks from Above' and Breckland National Mapping Programme.
The earthworks of this Second World War anti-aircraft battery are clearly visible on the aerial photographs (S1-S2) and the 0.5m resolution Lidar data (S3) [1]. The earthworks of the four anti-aircraft gun emplacements and the central command post are clearly visible in 1945 (S1-S2), however no clear evidence of it having been operational is visible, suggesting that the earthworks were dug as part of military training activity. The lidar (S3) indicates good survival of all components.
S. Horlock (Norfolk Historic Environment Service), 29 February 2017.