The text opens by establishing war as a vital matter of state that demands rigorous preliminary reckoning. The authors argue that armed conflict is intrinsically destructive, making speed and resource management essential, while prolonged campaigns inevitably exhaust the state and invite disaster. Rather than relying on brute force or frontal assaults, the supreme art of war is to subdue the enemy through superior stratagem, maneuver, and psychological insight, capturing armies and territories intact.
Central to this doctrine is the profound influence of ground, morale, and leadership. The general must understand the specific properties of various terrains—from open fields to death grounds—and utilize them to control the flow of the battle. Furthermore, the spirit of the troops is treated as a decisive factor, maintained not through blind obedience, but through disciplined organization, mutual support, and the calculated application of rewards and punishments. The text emphasizes that an army must be handled as a unified whole, moving with the fluidity of water by avoiding strength and striking at emptiness.
Great emphasis is placed on the estimation of the enemy and the indispensable role of intelligence. A wise general must continuously study the adversary's capabilities, vulnerabilities, and dispositions while strictly concealing his own plans. By mastering the dynamics of the normal and abnormal forces—holding the enemy with conventional tactics while defeating them with unexpected maneuvers—a commander can create situations where victory becomes mathematically certain before the first blow is ever struck.
The work also explores the ethical and political dimensions of command, warning rulers against political interference in military operations and cautioning against undertaking war out of anger or ambition. The text concludes with an extensive analysis of the five types of spies, framing this clandestine intelligence as the ultimate instrument of the commander. Throughout both the foundational articles and the subsequent sayings, the authors consistently return to the core truth that true mastery lies in thorough preparation, intimate knowledge of both self and adversary, and the supreme economy of achieving victory without strife.
