Passchendaele 1917 is the story of one of the most pitiless and iconic battles of the First World War, known today as Third Ypres. Fought over three tortuous months in 1917, the fighting raged through some of the worst physical conditions of the entire war, across battlefields collapsing into endless mud and blood. Eventually, more than 500,000 casualties bought front-line changes measured only in hundreds of yards. If you truly want to understand what happened and why – read Battle Story.