A framed stained glass window in a light box dedicated to the close association of the Communications and Security Group (United Kingdom) and all the "Y" Services (Army) with the village of Woodhouse and this Church.
A dedicatory brass plaque on the frame reads:
Installed by
13th Signal Regiment (Radio)
and
Communications and Security Group (UK)
1995And a nearby framed description:
'
This stained glass window, which depicts St Margaret of Scotland, was manufactured by Luke Dampsey of Plymouth In about 1930. It was originally Installed In All Saints Church, Plymouth. At some time, it was recovered from this church and removed to storage in the London Glass Depository by the Worshipful Company of Glaziers and Painters of Glass. in 1991 it was bought by 13th Signal Regiment (Radio) for the Regimental Church, St Margaret's, In Mercury Barracks, Dirgelen, Germany.
Following the disbandment of 13th Signal Regiment (Radio) in 1994, the window was transferred to the care of Communications and Security Group (United Kingdom). By kind permission of the Parish Council of St Mary in the Elms it has been installed in Its present location, where it will permanently mark the close association of the Group and all the "Y" Services (Army) with this Village and Church."
During WWII a 'Y' Station was situated at nearby Beaumanor Hall
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Beaumanor Hall history 1939–1970 -
From 1939 the hall itself was occupied by Number 6 Intelligence school, and the rooms inside Beaumanor Hall were used as a training centre for the Civilian Staff of the Post Office, Civil Service and Merchant Navy. The Royal Corps of Signals, Royal Navy and Royal Air Force were also having military staff trained inside the hall.
The huge cellars stretching underneath the whole of the building were used as electricians' workshops. The outbuildings and stables at the side and rear of the hall were used as workshops. These housed aerial riggers, a barracks store, M T Office, transport garage workshop and the instrument mechanics' laboratory.
By late 1941, most of the Royal Navy and Royal Air Force military personnel had left for duties at other Y-stations, and the main part of the site became the home of the Royal Signals. Military personnel were still being trained inside the hall for various tasks until the end of the war. In February 1942 the first of the newly trained ladies of the Auxiliary Territorial Service arrived at Beaumanor and were billeted in outlying villages and Garats Hay hall. Beaumanor became one of the most important of the small number of strategic intercept stations, or "Y stations", intercepting enemy radio transmissions and relaying the information to "Station X", at Bletchley Park, for decryption and analysis. It is known that one of the first confirmations of the successful Operation Chastise mission was received here. It is also widely rumoured that this listening post knew details of the Katyn massacre as early as 1941; however, the British government files were not released to the public, as it would implicate surviving perpetrators.
By 1943, Room 61 on the top floor of the hall was being used for Radio fingerprinting (Ackbar 13). This new technology was employed to uniquely identify the particular wireless set that was being used to send the transmissions.
Special receiving sets filmed the signals as they came in, like a cathode ray tube, and then the signals were captured on film and developed. Light tables were then used to compare the signals in order to verify who was sending them. A civilian from military intelligence at Bletchley Park was in charge of this room.
The Radio Direction Finding records room was next door and kept records of the signals' exact locations of origin.
In 1940 the use of the hall for all of these different functions allowed for the required specially designed wireless set rooms to be constructed in the grounds of the hall. This was instead of converting the existing rooms within the building for this purpose. A field to the north of the hall was chosen as the ideal location to construct the new set huts.
In the mid-1970s the hall was bought by Leicestershire County Council, developing quickly into a busy Conference and Education Centre.
The operational huts -
The War Office Y Group had acquired an architect who worked as part of the local staff at Beaumanor, and he was tasked with designing the set rooms and other buildings. These were to be disguised and fitted into their surroundings by being made to look like normal outbuildings associated with a country house. This disguising is unique to Beaumanor, and there are no current records of any other buildings the military used during the war being disguised in this way.
A twenty acre (8.1 ha) field to the north of the hall was chosen as the appropriate site to build the required operational set rooms (huts). The huts were spaced far enough apart to avoid collateral damage should a bombing raid occur. Each hut was brick-built with blast walls, and then a disguising outer covering was put over it.
The huts were disguised in different ways: one to look like a cart shed with barn (J), two to look like cottages (H&I), the fourth to look like stables (K), the fifth disguised as a glasshouse (M) block, and the sixth, Hut G, as a cricket pavilion complete with a false clock tower.
To give them an identity, the huts were each given a letter of the alphabet. The four huts around the perimeter of the field were lettered H, I, J and K. These huts were to be the four set rooms, which housed the wireless receivers for intercepting messages.
All of the cables and aerial feeds were located in underground ducts. Each hut had a pneumatic tube for sending the handwritten, received messages to G hut via a cylinder, which was shot down the tube. This tube system was also underground and out of sight.
In order to carefully conceal them, the other huts were given wooden exteriors and located in the wooded area to the rear of the hall on its western side. These huts were lettered A, B, C, D, E and F.
The wireless listeners were uniformed women of the ATS (Auxiliary Territorial Service), who had been trained on the Isle of Man. They intercepted German and Italian messages, many of which had been enciphered on Enigma machines. It was the most difficult of signals intelligence gathering, because the enciphering meant that no prediction was possible. Once gathered, the intercepts were sent by motorcycle courier to Bletchley Park, for decryption. Collectively, the women who worked at Beaumanor were known as the WOYGians"
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