Third-Generation Warfare (3GW) represents the decisive rupture between the industrial rigidity of the twentieth century and the cognitive dynamism of modern conflict. Emerging from the moral and mechanical exhaustion of Second-Generation Warfare (2GW), it redefined the logic of victory from material attrition to psychological dislocation. This chapter examines the genealogy of manoeuvre warfare as both a tactical revolution and a philosophical inversion—where freedom of movement replaced bureaucratic control, and speed became the new grammar of power. Through case studies ranging from the Fall of France (1940) to Operation Desert Storm (1991), it analyses how decentralised command, operational tempo, and cognitive disruption became the cornerstones of modern doctrine. Building upon the theoretical frameworks of Realism, HST, Idealism, and the AICST introduced in earlier chapters, the analysis foregrounds 3GW as a cultural and ethical paradox. While manoeuvre promised cleaner, more decisive wars, it also intensified destruction through velocity and precision—what Keegan (1993) termed “the illusion of control” and Gray (1999) described as “the moral anaesthesia of speed.” By integrating gendered and societal dimensions—total mobilisation, propaganda, and civilian participation—the chapter situates 3GW within the broader transformation of modernity itself. Ultimately, 3GW emerges not merely as a doctrinal stage but as a cognitive revolution that bridges industrial-era warfare and the information age. Its legacy lies in the transition from mechanical firepower to algorithmic manoeuvre, from battlefield conquest to perceptual dominance. This chapter thus positions 3GW as both culmination and catalyst—the pivotal hinge in the evolution from industrial war to the networked, psychological conflicts of the twenty-first century.