British radar chain begins continuous operation
Citations (1)
- Tragedy and Hope pp. 582-584 · open book
Adapted for defense against air attack in 1935, a chain of radar station, had been laid out in 1937 and began continuous operation in April 1939.
Adapted for defense against air attack in 1935, a chain of radar station, had been laid out in 1937 and began continuous operation in April 1939.