While I respect the hell out of Col. Cooper, I have to say this...one does not have be proficient in any of the above areas prior to joining to be successful in the Army, they may help some, but the Army will teach the willing everything they need to adapt to and grow with the Army. Having them prior to military service can be a good thing, but it can also lead people to ignore that which they are taught, which is not USUALLY a good thing in the military. Ask any Drill Sergeant what they would rather have, a guy who already knows everything, or some guy that knows little but is eager and willing to learn.
While I was in the Army I never had to ride a horse, sail a boat or read the Bible (although we were encouraged to do all three in our spare time, and provided facilities for these activities) but the rest was taught to me by competent instructors. If they needed us to do the rest they would've had a manual and block of instruction.
BTW....If most of these folks knew who Jeff Cooper was and what he does they would not bother responding to this post, or would've responded differently...he is an interesting person.
I worry when I like the same person that MD
-90 does, but I've met Uncle Jeff and believe in what he preaches about the practicalities and realities of effective firearms use. I have shot IPSC competitions and used what he teaches to do well. (Still won't buy a race gun.)
The 4 Rules should be required learning for anyone who may ever come into contact with an actual firearm.
I'm still not clear if he invented the Weaver Stance, but he perfected its use and how to train it.
He is correct about most things related to shooting. The Colt .45 is the finest CQB pistol ever made, and the Scout is the best rifle for any situation. SOme of the finest firearms manufacturers in the world have built to his specs. Springfield, Steyr, and others.