In the summer of 1936, over just four weeks, it all went wrong – for democracy and for Spain, even for the British royals. Politicians failed, and Hitler was emboldened to plan a new European war, and more.

When some army generals sought to overthrow Spain’s elected government, Francisco Franco quickly emerged as their leader; Nazi Germany and Fascist Italy supported him with men and materiel; pusillanimous politicians in Britain and the United States, even in France, turned a blind-eye – and the Spanish Civil War was on. Edward VIII took a scandalous holiday cruise with Mrs Simpson, Berlin staged the greatest sporting event of modern times, the alternative Peoples’ Olympiad never came to be, and Barcelona was transformed into a unique workers’ paradise. All this in four weeks. It was an incongruous, at times brilliant, juxtaposition of events.