What will advances in artificial intelligence (AI) mean for national security? This year in War on the Rocks, technical and non-technical experts with academic, military, and industry perspectives grappled with the promise and peril of AI in the military and defense realms. War on the Rocks articles discussed issues ranging from the different ways international competitors and military services are pursuing AI to the challenges AI applications present to current systems of decision-making, trust, and military ethics. War on the Rocks contributors added to our understanding of the trajectory of military AI and drew attention to critical remaining questions. A key takeaway is that technical developments in AI probably represent less than half the battle in attempting to effectively integrate AI capabilities into militaries. The real challenge now, both in the United States and abroad, is going beyond the hype and getting the right people, organizations, processes, and safeguards in place.