I have heard similar stats regarding WW2 soldiers and
that even at the front the highest percentage of grunts
never fired their weapons in anger. Asked my WIA WW2
paratrooper dad about it once and he basically said that
if there was ever a guy in his Company on Leyte who didn’t
fire his weapon then he would have sure wanted to have
the guy’s ammo.
the post mentioned it was WWI (not WW2)