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The twentieth century ushered in new forms of warfare. On the high seas the submarine would challenge the supremacy of surface craft, and in the ai...

A concise, illustrated guide to these Second World War defences scattered across the British landscape. With invasion a very real threat, in 1940...

Designed to dominate the surrounding area, to house powerful garrisons, offer sumptuous quarters for local nobility, and to discourage and repel en...