The entirety of human existence suggests multiple war theories and competing belief systems on what war is and how it can or cannot be exercised, even if we often are preoccupied with the current framework. Premodern societies differed from modern ones on whether humans or something divine or supernatural control the contexts and outcomes of war. Collectively, our species retains a firm appreciation of the assumed limits of what constitutes organized violence for political, social, or cultural aims, depending on the group and context. Yet in the twenty-first century, we may finally have set into motion the seeds of an unfamiliar, potentially incomprehensible, and likely transformative pathway where artificial intelligence or transhuman modifications may reveal what is called a “phantasmal transformation of war.” Complexity science explains reality and war so that earlier attempts—particularly those of the classical or natural science period and earlier prescientific attempts—are illuminated as insufficient or irrelevant outside of narrow or contextual applications. Today, Western militaries remain wedded to what is explained as a “Newtonian-style worldview” for understanding war, with select terms assimilated from complexity science and others ignored entirely. Indeed, modern military theorists assume an almost ideological devotion to what is largely a pseudo-scientific, static mode of framing war. Humans paired with certain advanced technology may also redefine war beyond previous physical domain and kinetic circumstances, including new manifestations in space, in cyberspace, and through accelerated human-machine teaming arrangements. Such novel conflict may in some applications exceed both human design and comprehension, potentially existing in planes or manifestations that are either undetectable by humans, rendered incomprehensible by select human actors, or potentially in modes that exceed the witting participation and awareness of our species.