I would extend it to say that we have a generation that think WWII and Korea, etc. was also "simple." I don't think our histories, or how we teach them, necessarily do those conflicts justice. We have created a strawman of "conventional operations" which makes a convenient foil for Irregular/COIN, etc.
I really reject complexity arguments of scale--"more complex", etc. Each conflict is different and each has its own characteristics and distinct complexities.
Bookmarks