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But because these were under
attack, potentially, They had to be made
of very thick concrete To be able to withstand bombing
and shelling
attack, potentially, They had to be made
of very thick concrete To be able to withstand bombing
and shelling
Full Transcript
00:00:01.000 --> 00:00:03.301
But because these were under
attack, potentially,
00:00:03.303 --> 00:00:04.936
They had to be made
of very thick concrete
00:00:04.938 --> 00:00:07.371
To be able to withstand bombing
and shelling.
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Movie Summary
An examination of hidden structures built by the Nazis, from tunnels to towers, artillery sites, resistance nests, and communication centres.