I thought this would be a great stand alone thread. So I started a new one.
The understanding that I have is that Donn Draeger, who wrote some of the best books still to this day about classical Japanese martial arts, termed the phrase. Or at least expanded upon it. Hoplos was a greek god of war I believe.
Three Axioms of Hoplology
1. The foundation of human combative behavior is rooted in our evolution. To gain a realistic understanding of human combative behavior, it is necessary to have a basic grasp of its evolutionary background.
2. The two basic forms of human combative behavior are predatory and affective. Predatory combative behavior is that combative/aggressive behavior rooted in our evolution as a hunting mammal. Affective combative behavior is that aggressive/combative behavior rooted in our evolution as a group-social animal.
3. The evolution of human combative behavior and performance is integral with the use of weapons. That is, behavior and performance is intrinsically linked to and reflects the use of weapons.
Here's more info.
Draeger also coined the phrase "an ass in tigers clothing" which could be a discussion unto itself.