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Today in World War II History

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Today in World War II History—December 20, 1943

Wednesday, December 20, 2023 by Sarah Sundin
The effect of “Window” on the display of a German Giant Würzburg (Würzburg-Riese) radar: the right half shows a normal display with a target blip in the 3 o’clock position; the left half shows the effect of jamming by “Window,” making target blips indistinguishable. (United Kingdom government photo, public domain)

The effect of “Window” on the display of a German Giant Würzburg (Würzburg-Riese) radar: the right half shows a normal display with a target blip in the 3 o’clock position; the left half shows the effect of jamming by “Window,” making target blips indistinguishable. (United Kingdom government photo, public domain)

80 Years Ago—Dec. 20, 1943: In bombing mission to Bremen, the US Eighth Air Force first drops “Window,” strips of foil that confuse German radar (first used by the RAF in July 1943).

Bolivian government is overthrown in a coup; President Enrique Peñaranda goes into exile, succeeded by Maj. Gualberto Villarroel López.

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