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And this was a really interesting device because it was grassed over so from the air it didn't look like a factory, so it wasn't bombed throughout the course of the war
Full Transcript
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And this was a really interesting device
00:00:03.046 --> 00:00:05.091
because it was grassed over
00:00:05.091 --> 00:00:08.085
so from the air it didn't look like a factory,
00:00:08.085 --> 00:00:11.076
so it wasn't bombed throughout the course of the war.
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Movie Summary
During World War II, the British built or reinforced a series of structures consisting of over 26,000 buildings to form a line of defence against an expected German invasion. Rob Bell travels around the UK to learn their secrets.