![](https://www.historynet.com/wp-content/uploads/2022/04/Winston-Churchill-Blitz.jpg)
British prime minister Winston Churchill scans the sky from an antiaircraft post; Reginald V. Jones, the scientist who would repeatedly foil the Nazis; Frederick Lindemann, Churchill’s top scientific adviser. (Clockwise from top: Keystone-France/Getty Image; Robert Hutton Collection; Fred Ramage/Getty Images)