Monument record BGL 041 - Possible World War II Light Anti-aircraft machine gun post.

A possible Light Anti-aircraft machine gun post of Second World War date can be seen cut into an earthwork, possibly a Round Barrow of Bronze Age date, centred on circa TM250442 on Brightwell Heath, Brightwell parish.
In 1947 it is still visible as an earthwork up to circa 19 metres in diameter with an entrance to the central zone to the north (S1). It is possible the earthwork was constructed specifically to house the gunpost but numerous archaeological features do appear to have been used in this manner (for example see BGL 008). Such defences were built within the perimeter of Martlesham Heath airbase to provide protection against potential invading forces. Defensive features that were constructed within possible archaeological monuments have been transcribed. However, the extensive barbed wire obstructions, numerous slit trenches, pillboxes and related anti-invasion defences which extend throughout the airfield and surround such features have not. This earthwork was levelled following the war.