(Indeed, during 1918 – British and German troops fought side by side in Revolutionary Russia – both armies attempting to kill Lenin – whilst their comrades continued to ‘kill’ one another in the mud of France and Belgium). Werth also seems to be discussing different phases of this ‘international’ intervention of Revolutionary Russia – referring to the conflict as happening between 1918-1921, 1919-1920 and 1919-1921, etc. This (unexplained) demarcation demonstrates just how difficult and complex this invasion was – despite Werth referring to it as ‘half-hearted’. This ‘half-hearted’ Western invasion of Revolutionary Russia cost the lives of 10.5 million Russians (and Russian-allied) people in what was to later become the ‘Soviet Union’ (a political integration of 15 countries).