Released in December 2018, Army Training and Doctrine Command (TRADOC) Pamphlet 525-3- 1, The U.S. Army in Multi-Domain Operations describes how Army forces contribute to the Joint Force's principal task as defined in the unclassified Summary of the National Defense Strategy: deter and defeat Chinese and Russian aggression in both competition and conflict. The U.S. Army in Multi-Domain Operations' proposes detailed solutions to the specific problems posed by the militaries of post-industrial, information-based states like China and Russia. Although this concept focuses on China and Russia, the ideas also apply to other threats. The concept describes the Army in 2028, though some of the capabilities described might not be fully fielded across the entire force by that time.Strategic competitors like Russia and China are synthesizing emerging technologies with their analysis of military doctrine and operations. They are deploying capabilities to fight the US through multiple layers of stand-off in all domains - space, cyber, air, sea, and land. The military problem we face is defeating multiple layers of stand-off in all domains in order to maintain the coherence of our operations.Therefore, the American way of war must evolve and adapt. The U.S. Army in Multi-Domain Operations, 2028 is the first step in our doctrinal evolution. It describes how US Army forces, as part of the Joint Force, will militarily compete, penetrate, dis-integrate, and exploit our adversaries in the future.This product is not a final destination, but is intended to provide a foundation for continued discussion, analysis, and development. We must examine all aspects of our warfighting methods and understand how we enable the joint force on the future battlefield. We must challenge our underlying assumptions, and we must understand the capabilities and goals of our potential enemies. That is how we change our warfighting techniques and build the fighting forces we need in the future. It is also how we maximize deterrence and, if necessary, win future wars.Read, study, and dissect the multi-domain operations concept in this document. Every one of you is part of our evolution and the construction of the future force, and we want your critical feedback. We are laying the cornerstone for the success of our future Army in a profession where there is no room for second place. With your help, we will ensure America's Army is ready, lethal, and prepared to destroy its enemies now and in the future, in any domain, anytime, anywhere.