[Courage is spread throughout the military but super training isn’t.
During WWII we had our Special Operations men in elite units also.]
I agree and know that was one reason the Rangers used to get disbanded after wars.
I think the person I was posting to though was getting swept away with the courage aspect.
The training is also what helps control the selection, many apply, not everyone clears the training, elite training is expensive, time consuming, requires intelligence, toughness to endure suffering that makes the weak cry for comfort, high personal discipline, and high physical standards and can’t be made universal, a quick example is how few blacks used to get through elite training although there is plenty of athleticism among black GIs.