The Rise of iWar: Identity, Information, and the Individualization of Modern Warfare. Strategic Studies Institute. Glenn J. Voelz. October 16, 2015.
During a decade of global counterterrorism operations and two extended counterinsurgency campaigns, the United States was confronted with a new kind of adversary. Without uniforms, flags, and formations, the task of identifying and targeting these combatants represented an unprecedented operational challenge
for which Cold War era doctrinal methods were largely unsuited.
http://www.strategicstudiesinstitute.army.mil/files/1292-summary.pdf Executive Summary [PDF format, 2 pages, 551.8 KB].
http://www.strategicstudiesinstitute.army.mil/pubs/display.cfm?pubID=1292 Full Text [HTML format with a link to the PDF file].