The way militaries learn has evolved over time, and the first two decades of the 21st century once again see military learning on the cusp of change. Since the start of the modern era in the early 18th century, military learning has evolved from a focus on technical, tactical skills relevant to specific combat branches to a generalized study of war and warfare that blends theory and practice. These changes have come about in response to developments in human capital, battlefield technology, and warfare, or how military forces fight. The early 21st century has witnessed a new shift in warfare, from networked warfare—in which information is synchronized across location, targeting, and precision guidance systems to find, fix, and destroy the enemy with deadly efficiency—to unconventional information warfare—in which non-state actors have access to many of the same information resources and, combined with cyber capabilities that rely on anonymity and occasional state support, negate many of the advantages of networked warfare. This portends a change in how militaries learn, to patterns of learning that can cope with a battlespace that is potentially omnipresent, where states must incorporate all elements of national power coherently in order to achieve success in war.
These changes are evident not only on the battlefield, but also in military schools. The theories of Napoleonic warfare born at the dawn of the modern era seem increasingly inadequate for the realities of modern combat. This calls for the generation of new bodies of knowledge by military officers and other specialists in the field. The notion that war itself is politics conducted by other means is increasingly under threat. Likewise, curricula at military schools bear an increasing resemblance to curricula at academic civilian programs in security studies, leadership, and international relations, and more and more civilians are sitting side by side with military officers in the classroom. Since the end of World War II, the bounds of the battlefield have bled into the traditionally civilian space of information, so the study of war and warfare is no longer the unique province of the military officer. This process has accelerated in the 21st century, and a range of defense analysts, scholars, and policymakers have commented on how military forces prepare to fight.