The Joint Force, and the national security community as a whole, must be ready and able to respond to numerous challenges across the full spectrum of conflict including complex operations during peacetime and war. However, this presupposes a general acceptance of a well understood taxonomy describing the elements that constitute the “continuum of conflict.” The U.S. security community lacks this taxonomy, despite its engagement in a spate of diverse conflicts around the globe from the South China Sea, to Ukraine, Syria, Iraq, and beyond. Partially as a result of this conceptual challenge, we are falling behind in our readiness for the future. Understanding our future security challenges demands that we reflect and interpret the past, understand the present, and think rigorously about what lies over the horizon in order to adapt to the changing character of conflict. This requires keeping an open and informed mind about the breadth of the various modes of conflict that exist. The wars of the 21st century may take many forms. As conflict reflects a greater degree of convergence and complexity, so must our mental models and frameworks.