Unlike the stalemate of the trenches, the little-known Eastern Front of the First World War cost 12 million casualties. It spanned thousands of miles from the Baltic to the Black and Caspian seas, spreading to the Arctic and Pacific, and involved thousands of British and US soldiers in secret operations in the far north, Siberia and Ukraine. While the west began to recover after the war, this savage conflict destroyed all the belligerents in the east. Berlin ended the Eastern Front hostilities prematurely at Brest Litovsk, having covertly financed and promoted the Bolshevik Revolution. This unleashed a 'rainbow of death' with the Red Army using famine, poison gas and concentration camps. This remarkable story of war and attrition is brought to life by personal accounts from all sides.