We are saddened to announce the peaceful passing of Donald Brown on 9th January.
Previously a headmaster, Don was a keen WW2 researcher who helped with the Defence of Britain Project (1995 – 2001) and who made the most of his Somerset contacts through his time with the Mendip Ranger Service. He tracked down and interviewed surviving Auxiliers and visited their Operational Bases. He collected copies of surviving papers and photographs, and together these were the source for his 1999 book; Somerset Versus Hitler.
He also assisted Tim Wray with his research for his book on Somerset Auxiliary Units, as well as John Warwicker for With Britain in Mortal Danger.
Don was instrumental in supporting CART in its early days by generously providing access to his collection of material about Auxiliary Units. He supplied us with the first national Auxiliary Units spreadsheet he and Tim had been working on. It was a game changer for us as it had so many names on it, all ordered, and saved many years of work for us, for which we are hugely grateful.
Due to the Covid pandemic the family are having a small family funeral and intend to follow this with a memorial service when it is appropriate and safe to do so.
He will be sorely missed and we send our condolences to his family and friends at this difficult time.
CART’s Andy Chatterton returns to talk with the ‘History Hack’ ladies – this time it’s about the Special Duties side of Auxiliary Units – this was the civilian spy network that was put in place to report enemy troop movements once the country had been overrun by the Nazis.
Pelynt village (near Looe) in Cornwall is the latest place to erect a memorial to Auxiliary Units. The memorial was unveiled in spring, but due to the virus there was not the turn-out hoped for. The memorial has been placed outside Pelynt village hall at a specially prepared seating area.
CART was also planning to attend with our large multi-award winning display of Auxiliary Units equipment and information. We will do this when we are allowed our freedom back and it is safe to do so.
Thanks goes to John Jolliff for being such a force in bringing the history of these brave men and women to his community by way of his many informative talks. Thanks also to Mary Talbot for her organizational skills and this photograph of the memorial.
We must be now very near to losing all members of the Auxiliary Units and Special Duties, but we are more determined than ever to remember them and the sacrifice they were willing to make for the country.
For the final day of the Festival of Archaeology, we are looking at some of our most recent projects. As yet they these do not have full or final reports but there are still interesting findings we can share.
At Nether Stowey we had the opportunity to briefly investigate an Operational Base that was already partially collapsed. The site was on a farm, and had proved an ongoing issue for the sites owners, as their sheep regularly found a way through increasingly expensive fencing and into the OB. Once there they struggled to extract themselves and over the years, more than one had ended their days there. The plan was therefore to bury the OB and prevent this happening. CART were offered the opportunity to investigate the OB prior to the site being buried. In this situation there is no need undertake a total excavation. Parts of the structure will remain intact for future generations to study. The purpose was to learn what was not immediately obvious. There was limited time, with a day or preparation and a day for excavation.
A draft report on the excavation details the findings. Whilst the main chamber was the typical elephant shelter, both the entrance and escape exit are different. See our images of the dig for more details. Possibly the escape exit may represent a later addition, although no specific proof of this was found. The end chamber is built from bricks, unlike the concrete blocks of the main end walls, except around the route to the escape tunnel. We have a couple of basic plans to show the layout, though the more formal plan was drawn up prior to the excavation so does not show the entrance that was identified. Creating detailed plans and reports is a lengthy process and just recently our new website has taken priority. However, hopefully this will indicate how the new website will be developing as we have the chance to complete and add this material online.
A final bonus from the excavation was the publicity in the local area regarding the excavation resulted in CART being given a copy of a photograph of the Nether Stowey Patrol.
Over a period of several weeks in 2019, CART, supported by Dorset Council and their wildlife volunteers with some technical support from the New Forest Community Archaeology team. From the first identification of the exact location by local resident Adam Dunn, to the extensive excavation and final interpretation board, has been quite a journey. Our initial report shows the difference from what we knew at the start of the year to now. The Ferndown Patrol report contains some of the images from this, another site which had an extensive ventilation system of glazed pipes, which was partially uncovered during the dig. Metal detecting and ground penetrating radar were both deployed in the initial stages to locate the buried structures. The former found the water tank with its concealed filler cap, whereas the latter was better for finding the shaft and the disturbed ground of the ventilation system. We are grateful to Gary Sterne of Maisey Battery for bringing his expensive kit and helping us out. Do check out his site in Normandy, for some very extensive digging and some remarkable associated historical research that is rewriting one of the central stories of D Day.
Our attempts to have a formal unveiling of the new interpretation board and the remains deliberately left extant were unfortunately foiled, first by severe storms this spring, then by the coronavirus pandemic! We would like to put on an event to show off the finds but perhaps that will have to wait for the 2021 Festival of Archaeology!
And as an extra bonus here is our colleague, John Wareham, instrumental in setting up the Ferndown excavations, with his video of the Auxiliary Units display built for a show season that won’t be happening. John is definitely our experimental archaeologist, learning how to remake items not built since the war.
Finally we bring you a short report from the Coleshill Estate. The team there have continued their investigation of the training structures at the site and have identified a new Operational Base there. This appears to be of a much earlier type than the previously known elephant shelter, being a box-like structure of corrugated iron on wooden beams. This may suggest that the design of OBs developed officially during the war, perhaps as more experienced Royal Engineer Officers became involved.
We hope you have enjoyed our brief tour through the archaeology of Auxiliary Units. CART continue to research the Auxiliary Units and new information has been forthcoming even during this week. New material is now being regularly add to our website, so do keep coming back to see. We would be keen to hear from anyone investigating Auxiliary Units sites of all types, anywhere in the country, to share what we have found and to help learn from our mistakes. We are grateful to those archaeologists, both professional and amateur, who kindly shared their research with us to share with you. Please contact us if you have any information about Auxiliary Units that you don’t see on this website already. We think we have included everyone who was involved, but we know there must be missing names.
When looking at an Operational Base, a plan can helpful to understand what can be seen in specific photos. It is often difficult to understand a structure from a single image or series of images. But a plan, or series of plans, can only show two dimensions at once.
The simplest way to address this is with a sketch, that adds the third dimension. Our Admiralty 4 (Prior Park) Patrol report contains an example of this. The sketch makes clearer how an underground structure is arranged, when that cannot be easily seen from the images alone.
Software has made it possible to build virtual 3D models from measurements of an Operational Base. Once the realm of specialists, there are now entry level software options to build a virtual 3D model and colour it to create an accurate reconstruction of an OB that may be collapsed or overgrown. An example of this can be seen with theseimages of a very overgrown OB at Portesham in Dorset, with a simple 3D model showing much more clearly than any of the image the layout of the operational base.
We have been fortunate enough to have a professional showing us how it should be done. Matt Brazier kindly produced a couple of models of Operational Bases for CART and has animated these into a walk through which further improves the understanding of design. We have seen his model of the Salisbury In-station already. He produced another of Operational Base of the Drellingore Patrol. The OB in this instance was collapsed, though the shaft and escape tunnel remain intact. The reconstruction video allowed the original structure to be visualised as it would have been. There is always a risk of introducing interpretation into a model and making assumptions. The initial model of the Binnegar OB seen in the report, assumed the shaft was a rectangle shape. However, once excavated it became clear it was narrower at one end than the other, as can be seen in the images. Experience has shown that you can’t take too many measurements and it is is also worth planning a follow up visit to repeat the measurements that were overlooked the first time!
More recently archaeological recording has advanced to incorporate 3D scanning technology. Issues of missed measurements are overcome as the laser scanner takes thousands of measurements to create a point map. This plots each measurement in three dimensions to create a virtual model of the structure. This model can be rendered with either illustrations or photographs mapped onto the images. Recently, AOC Archaeology were contracted by Forestry and Land Scotland to record an Operational Base that came to light during felling works. This was an OB in a relatively good state of preservation, belonging to the Beattock Patrol in the Scottish Borders and ideal for this technique. Of particular interest was the linking of scans above and below ground to generate an illustration of the location of the structure in the landscape. As these structures are vulnerable to rust and other natural damage over time, this has to be the modality of choice to record these structures where possible. We are grateful to AOC for sharing the final report and the images. These images are very effective and certainly captured the imagination of the press, resulting in numerous articles including one in French!
Investigating buried structures using geophysical techniques has been increasingly common in recent years. It allows large areas to surveyed relatively quickly and uses differences in the responses generated by the buried archaeology and natural or fill materials to locate structures and identify their extent. If you have ever been confused by what it involves, Historic England have a straightforward explanation in their guide to research techniques.
The use of such techniques on Auxiliary Sites has been relatively limited. This may relate to the belief that the sites are identified and not recognising that elements of the structure may extend beyond the immediately visible OB, as we saw with the ventilation systems at Binnegar and Bromyards Downs in previous pages. Many structures are in woodland, where the application of the techniques are more difficult.
At Coleshill, a metal detecting survey and magnetometer was used to identify metallic targets for investigation. A ground penetrating radar was briefly trialed over the known demonstration Operational Base at Coleshill House and showed that it was detectable to the technique.
Subsequently a formal magnetometry survey was conducted by the short lived Churchill’s Underground War Group, at Langrish House in Hampshire, in an attempt to identify a possible Operational Base in the grounds. Nothing was found though documentary evidence has subsequently suggested the OB was elsewhere.
The Buckland St Mary In-station was known to have been built at Castle Neroche. The Castle was an Iron Age Hillfort converted into a Motte and Bailey Castle during the Anarchy period. Sergeant Arthur Gabbitas who documented the role of his Royal Signals colleagues in the Auxiliary Units Special Duties Branch was stationed there for a while. He left a brief description of the site. Historian and former Royal Signals Officer, David Hunt, visited the site in 2008, obtaining a useful first hand account of the location of the Operational Base, a “Zero” station for the the Chirnside Network, from a local resident who remembered it. His account included the presence of ventilation pipes showing like rabbit holes in the side of pits in Castle grounds. No remains could be found at the time but the site was recorded on the Somerset Historic Environment Record. There are separate records for the above ground Met Hut, which David remembered as still present during his own childhood visiting the site, and the Operational Base.
In 2017, CART arranged a visit to the site, to see if any evidence remained. David’s reports provided a focus for the search. The Met Hut base was measured and photographed. The location of the door could be identified. A search of the surrounding area found a small fragment of wire on the adjacent bank, twisted as if to connect to a terminal, perhaps for a battery. At the location identified for the Operational Base, fragments of glazed earthenware pipe were found, a feature often seen at such sites. A very careful search found a small hole near the edge of the bank with the top of two earthenware pipes just visible at its base, just a few centimetres below ground level. The earth had washed down into the pipes over the years, creating the hole. The pipes were almost certainly part of the ventilation system previously noted. Nearby an aerial tree was identified with fragments of the aerial feeder cable projecting from the bark. Because the entire site is a scheduled monument, no excavation of any sort was possible.
A report was prepared and submitted to the County Archaeologist who fortunately was interested enough to arrange for a further non-invasive investigation after obtaining the necessary permissions. Liz Caldwell from GeoFlo (www.geoflo.co.uk) was commissioned by the Southwest Heritage Trust, which was organised by Chris Webster, to survey the site. We think that this report represents the first time that an Operational Base was located by such techniques. With permission we include images from this report in an album of images form the site. The survey was conducted with a Fluxgate gradiometer (Bartington Grad 601-2 ) and Resistivity meter (TR/CIA Resistance Meter) processed with Geoscan Geoplot 3.00v software. The survey showed with a high degree of confidence the location of a structure underground, with a high magnetic signal, consistent with an elephant shelter structure. The ventilation pipes were not visible using these techniques.
On a repeat visit visit to the site, with a change in the conditions, a very shallow regular depression could be identified at the site identified by the non-invasive techniques. A further hole with a pipe junction was identified, in line with the first, supporting the interpretation of a ventilation system. Two aerial trees were identified. We do not believe there is a third extant tree at the site, though there is another tree with a lightning scar, an appearance that can look similar to an aerial scar. As both aerial trees and lightning strikes are located on high ground they can exist in close association.
Coming right up to date, a group from Keele and London South Bank Universities have published a pre-print paper utilising several techniques, namely, Ground Penetrating Radar (GPR), Resistivity, Conductivity and Metal detecting across three Operational Base sites, one intact, another collapsed and a third destroyed to test the modalities. Metal detecting proved valuable in locating the site of the structures, with GPR showing extant chambers and depths. The other modalities also produced useful information and allowed the construction materials to be identified. This is an interesting proof of concept study and suggests that the study of buried structures of the Auxiliary Units with non-invasive techniques is both useful and practicable. We look forward to further investigations of this nature.