On 8 August 2019, the Department of Defense (DoD) published Army Field Manual (FM) 6-27/Marine Corps Tactical Publication 11-10C, The Commander’s Handbook on the Law of Land Warfare (Handbook) , replacing FM 27-10, The Law of Land Warfare (1956). As judge advocates, we have an obligation to provide relevant, understandable, and accessible tools for commanders, Soldiers, and practitioners. This Handbook provides an invaluable tool for Army and Marine Corps commanders and their judge advocates to guide land forces in conducting disciplined military training and operations in accordance with the Law of Armed Conflict (LOAC).