In the second volume of his landmark First World War trilogy, Professor Nick Lloyd tells the story for the first time of what Winston Churchill once called the 'unknown war': the vast conflict in Eastern Europe and the Balkans that brought about the collapse of three empires. Through intimate eyewitness reports, diary entries and memoirs - many of which have never been translated into English before - Lloyd reconstructs the full story of a war that began in the Balkans as a local struggle between Austria-Hungary and Serbia, and which sucked in Russia, Germany and Italy, right through to the final collapse of the Habsburg Empire in 1918. The Eastern Front paints a vivid and authoritative picture of a conflict that shook the world, and that remains central to understanding the tragic, blood-soaked trajectory of the entire twentieth century, including the current war in Ukraine.