I own a table saw and have been working with wood as a matter of practical necessity for the past several months while renovating a home; this article wouldn't be the first time I've stumbled upon the term riving in the context of woodworking.
So when a 17-image photojournal describing a manual woodworking procedure concludes with a battle axe pose remarking on its ability to chop through a leg bone, the prose struck me as aggressively misplaced. I mean table saw and chain saw accidents are relatively commonplace and surely claim a fair number of limbs every year, but the efficiency of a woodworking tool in its misuse case isn't typically paraded as a metric of merit...unless you're an organization dedicated to combat training...then the prose makes complete sense.
I'm not even sure it's about battle, I think it's just being aware of where misplaced a axe blow will end up (missing your target when chopping wood and hitting yourself in the shin or foot is a common injury).
Given what I believed to be strict woodworking context and before GP shined light on the combat training mission of the host organization, that's exactly what I was thinking. I hadn't realized that the intent of the photojournal was to demonstrate manual riving as a means of fabricating a weapon handle.