One hundred years ago, between July and November 1917, the fields of Flanders witnessed one of the bloodiest episodes of the First World War. From why the attack was launched to how the weather led to its infamy, here is all you need to know on the controversial offensive.
What happened at Passchendaele?
What took place was officially known as the Third Battle of Ypres, but history recalls the horror in one word: Passchendaele. The name, along with the Somme, has come to symbolise the Great War for many.
