This Chapter details a conversation between King Wu and Jiang Taigong, discussing military strategy in The Art of War. Jiang Taigong explains the optimal ratios of chariots, cavalry, and infantry for different terrains and battle situations. He also outlines the organizational structure and formations for both chariot and cavalry units, specifying troop numbers per rank and distances between units for both open and difficult terrain. These strategies emphasize maintaining discipline and flexibility for tactical advantage. The discussion concludes with King Wu's approval of Taigong's insightful advice.