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But rapid developments in tactics and technology meant that vast swathes of a potentially 400-mile long coastline, that had previously had no intrinsic strategic value, now needed defending from possible invasion
Full Transcript
00:00:01.000 --> 00:00:04.066
But rapid developments in tactics and technology
00:00:04.066 --> 00:00:07.079
meant that vast swathes of a potentially
00:00:07.079 --> 00:00:10.026
400-mile long coastline,
00:00:10.026 --> 00:00:13.098
that had previously had no intrinsic strategic value,
00:00:13.098 --> 00:00:17.551
now needed defending from possible invasion.
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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.