The book "Grenadier Guards of the Great War 1914-1918, Volume 1 of 3" by Frederick Ponsonby is a valuable documentary source about the events of the First World War from the point of view of the military actions of the Grenadier Regiment. The book describes in detail the battles, operations and events in which the grenadiers took part, their victories and losses. The author reveals not only the military aspects, but also the inner world of the fighters, the spirit of brotherhood and courage that helped them overcome difficulties. The reader will have the opportunity to better understand the importance of the grenadier regiment in the context of the experiences and achievements during the Great War, as well as to take a virtual trip back in time to those distant events of a century ago.