Max Hastings investigates the complex diplomatic failures and military miscalculations that transformed European tensions into the catastrophic outbreak of the First World War in 1914. Drawing on his extensive background as a military historian and journalist, Hastings synthesizes primary source accounts from both high-ranking officials and common soldiers to reconstruct the initial months of the conflict. He argues that the war was not an inevitable tragedy but the result of specific, avoidable decisions made by leaders who failed to grasp the lethality of modern industrial warfare.

This work is regarded as a comprehensive and accessible account of the war's opening phase, praised for its ability to balance high-level strategic analysis with the visceral experiences of those on the front lines. The text serves as a definitive entry point for readers seeking to understand the rapid escalation of the 1914 conflict through a lens of human fallibility and military evolution.