Fighter aircraft, tanks, submarines, heavy artillery: the horrors of warfare between 1914 and 1918 were a crucible for deadly technological innovation, including the poison gas that came to symbolise ...
A team of divers explored the century-old wreck of the WW1-era submarine HMS M1, 20 miles off Plymouth, Devon, UK. The sub, famous for its 12-inch onboard gun, sank in 1925 after colliding with a ...
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