The book is dedicated to the two Supreme Commanders of the Russian Imperial Army during the First World War (Great) - Grand Duke Nikolai Nikolaevich the Younger and Sovereign Emperor Nicholas II. The collection includes the memoirs of their contemporaries - Yu. N. Danilov (Quartermaster General of the Supreme Commander-in-Chief's Headquarters), P. K. Kondzerovsky (general on duty under the Supreme Commander-in-Chief) and others, essays by historians S. N. Bazanov and A. V. Oleinikov, as well as documents. What is the role of each of the commanders in chief in the outcome of the Great War for Russia? What qualities did they have? How did their contemporaries see them? How do historians evaluate their actions? The material selected by the compiler will allow everyone to answer these questions, and quite possibly even reconsider their point of view. For a wide range of readers.