Welsh Heroes of World War II is a History Documentary programme.

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Welsh Heroes of World War II: Tracking the Enemy

Series 1, episode 2

In the second episode, we meet 91-year-old Eileen Younghusband from Sully. At just 19 she was chosen to join a select group of women who worked in the secret Filter Room - the hub of the radar system during the war. They would track hostile aircraft approaching Britain relaying information for the RAF to scramble, and to trigger air raid warnings. They had to be good at maths and keep calm under pressure as there was no room for error.