The chapter makes a twofold contribution to contemporary research on norm contestation, both theoretical-conceptual and empirical. First, its discussion concentrates on the question of how new forms of agency, distributed between humans and artificial intelligence (AI) technology, influence established concepts within norm research and challenge norm contestation studies. This suggests a broadening of perspectives on the practice of meaning-of-use—in this analysis, the meaning of the generative practices of using technology. Practice here refers to the patterned, repetitive character of actions and their implications. Second, the empirical focus of the chapter centres on the practices of integrating AI in military applications and processes. The increasing incorporation of AI therefore gives rise to novel understandings of what constitutes appropriate use of force and can be understood as constituting cases of non-public norm contestation and norm emergence. This sheds light on emerging challenges in norm research, notably the advent of distributed human and non-human agency and the establishment of flexible norms in the human interaction with technology. The chapter concludes that the emergence of AI requires a major conceptual rethinking of how we understand and study the role of norms in many different sectors of politics and society.