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Operation Epsilon

History of HuntingdonshireIntelligence of World War IIIntelligence operationsMilitary history of CambridgeshireNuclear program of Nazi Germany
Operation EpsilonScience and technology in Cambridgeshire
FarmHallLarge
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Operation Epsilon was the codename of a program in which Allied forces near the end of World War II detained ten German scientists who were thought to have worked on Nazi Germany's nuclear program. The scientists were captured between May 1 and June 30, 1945, as part of the Allied Alsos Mission, mainly as part of its Operation Big sweep through southwestern Germany. They were interned at Farm Hall, a bugged house in Godmanchester, near Cambridge, England, from July 3, 1945, to January 3, 1946. The primary goal of the program was to determine how close Nazi Germany had been to constructing an atomic bomb by listening to their conversations.

Excerpt from the Wikipedia article Operation Epsilon (License: CC BY-SA 3.0, Authors, Images).

Operation Epsilon
West Street, Huntingdonshire Godmanchester

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Latitude Longitude
N 52.315833333333 ° E -0.17916666666667 °
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Farm Hall

West Street 24
PE29 2HQ Huntingdonshire, Godmanchester
England, United Kingdom
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Portholme
Portholme

Portholme (or Port Holme on Ordnance Survey mapping) is a 106-hectare (260-acre) biological Site of Special Scientific Interest in the Parish of Brampton between Huntingdon and Godmanchester in Cambridgeshire, England. It is a Nature Conservation Review site, and a Special Area of Conservation.The site is an alluvial flood meadow, and one of the largest areas of grassland which is still traditionally managed as a Lammas meadow. Watercourses have some unusual invertebrates, including the nationally restricted dragonfly Libellula fulva. The meadow is managed by cutting followed by grazing, and it is flooded in winter and early spring. There is access by road from Mill Common, Huntingdon. and on foot via the Ouse Valley Way from Godmanchester Chinese Bridge or Bromholme Lane, Brampton. In 1910, James Radley, an early aviation pioneer based in Bedford believed that the flat areas of the Portholme Meadow, shielded from winds, and accessible to local towns, were ideal for take-off and landing as well as demonstrating to an enthused public the wonder of flight. Having acquired a Beleriot monoplane, on 19 April 1910, with almost the whole population of Huntingdon, Godmanchester, and Brampton watching, Radley took off and flew circuits of the meadow to the amazement of the local crowds. Radley's aircraft was able to complete a 16.5 mile circuit of the meadow at an altitude of 40 feet in just under 24 minutes - just over 41 miles per hour. Between April and October 1918, the meadow was used as a Training Depot Station (designated No. 211 TDS) by the Royal Air Force. Aircraft were moved to RAF Scopwick in October 1918.For clarification the feature is commonly mapped geographically, with two words: Port, and "Holme" meaning island. The SSSI was specifically named "Portholme" and includes other areas adjacent to the island. Both spellings are used in Huntingdonsire Local Plan to 2036.

Huntingdon Castle
Huntingdon Castle

Huntingdon Castle was situated in the town of Huntingdon in Cambridgeshire (grid reference TL240714). In 1068 a Norman motte and bailey castle was built for William the Conqueror. During the Anarchy the castle was held by David, King of Scotland through his marriage to Maud, 2nd Countess of Huntingdon. He supported Empress Matilda in a battle of succession and the castle was much damaged at this time. However, when the succession was settled, David's son Henry paid homage to King Stephen who in turn gave him the borough of Huntingdon in addition to the castle. By 1173 the castle was still held by the kings of Scotland, at that time by William the Lion. He had sided with Henry, the rebel son of Henry II, during the Revolt of 1173–1174, and the castle was besieged by Richard de Luci. The siege was taken over by Simon de St. Lis but it did not end until Henry II (who had just performed penance at the tomb of Thomas Becket) arrived at Huntingdon. The siege ended the following day and Henry then ordered that the castle be dismantled (slighted). The Pipe Rolls recorded that 7s 8d was spent on dismantling the palisade. According to historian Sidney Painter, it was one of at least 21 castles demolished on Henry II's instructions.Parts of the castle did remain, including the chapel, and its ownership passed through a number of hands. The castle was refortified during the Civil War. For a time it served as the county gaol, and later a windmill stood on the castle mound. Nothing now remains of the castle itself apart from its earthworks, although the site is a scheduled ancient monument.