This book outlines the concept of Fifth Generation Warfare (5GW) and demonstrates its relevance for understanding contemporary conflicts. Non-kinetic modes of attack and war waged by groups or non-state actors at the societal level has been termed 5GW. This book discusses the theory of generational warfare and explores the key ideas of 5GW, such as secrecy, the manipulation of proxies, the manipulation of identity and culture (including disinformation and big data), and the use of psychological warfare. These techniques are used to achieve strategic objectives, such as inducing desired behaviour and controlling human terrain, without resorting to overt war or overt violence. The text expands the debate on 5GW by exploring emerging technologies and how they could be used for maliciously shaping human society and even for maliciously changing the genetic makeup of a population for the purpose of unprecedented social control. The work closes with comments on the possibility of a Sixth Generation of Warfare, which targets technical systems to possibly collapse a society through strategic sabotage. Overall, the book demonstrates the relevance of 5GW for understanding contemporary conflicts, from the Arab Spring to the war in Ukraine, in terms of the need for dominating the human domain. This book will be of interest to students of security and technology, defence studies and International Relations.