This work investigates the nature of supreme command and the exercise of individual power among the primary leaders of the Second World War. A.J.P. Taylor, a prominent British historian known for his provocative and analytical approach to twentieth-century European history, examines the decision-making processes and personal authority of these figures. By analyzing their specific roles within their respective regimes, Taylor argues that the concentration of power in these individuals fundamentally shaped the trajectory and outcome of the global conflict.

Historians frequently note the concise and incisive nature of Taylor's prose, which favors sharp political observation over exhaustive archival detail. Experts often categorize this as a secondary, interpretative text that serves as a useful introduction to the personalities driving the war's strategic direction.