The massive offensives on the Eastern Front during 1915 are too often overshadowed by the events in Western Europe, but the scale and ferocity of the clashes between Imperial Germany, Habsburg Austria-Hungary and Tsarist Russia were greater than anything seen on the Western Front and ultimately as important to the final outcome of the war. With the Russians hamstrung by weak supply lines and the Austro-Hungarian leadership committed to a strategy of offensive drives despite diminishing manpower and adverse terrain, the fighting in early 1915 was a costly and futile exercise. By the summer, the Central Powers, increasingly dominated by Germany, had begun to gain the advantage, but even the Gorlice-Tarnów Offensive of 1915 - which ultimately resulted in the retreat of Russian forces from Poland - failed to bring the conflict to a conclusion. Now with the work of internationally renowned Eastern Front expert Prit Buttar, this fascinating story is finally being told. From the bitter fighting in the Carpathian Mountains, to the sweeping advances through Serbia and the almost medieval battle for the fortress of Przemysl, this is a staggeringly ambitious history of some of the most important moments of the First World War.