Warfare in the 21st century is far different than warfare throughout the 19th and 20th centuries. Conventional warfare was about kinetic force and bending an adversary by might and strength. Skills valued were those related to mastery of weapons and placing ordnance on target. Courage and valor were defined by conflict, militaries were distinct from the population, and occupation was an enduring stage of war. Contemporary warfare, besides continuing to be an exercise in military strength, is composed of missions that depend on skills to forge interpersonal relationships and build sustainable...