There are two enigma machines, dozens of bottles of French wine and about 200 condoms – alongside toothpaste that’s still minty, and coffee which has retained its aroma. A trove of extraordinarily well preserved Nazi artefacts, recovered from a sunken U-boat in the 1990s after nearly 50 years at the bottom of the ocean, are to go on public display for the first time. Historians are sifting through thousands of previously unseen artefacts left untouched since 1945, hoping to find new insights into the lives of those who spent months aboard German submarines during the second world war. Visitors to...