Watch BBC - Heroes and Weapons of WWII Season 1 Online
- Subtitles: English
Radar gave British air defence the edge during the Battle of Britain and helped save Britain from invasion. But who were the electronic boffins behind its development in the 1930s and 40s? This programme reveals the technological race between Britain, Germany and America to create the most effective radar and how radar also helped Britain defeat the U-boat menace.
