"The most dangerous man in the Army is a 2d Lieutenant with a map and a compass."
Not so.
The most dangerous man in the army is a 2nd Lieutenant with a pen.
He will sign anything - if the sergeant dont catch him first!!!
As for the non-commisioned ranks, they spend time as a private before gaining rank, so a lance corporal HAS gained experience of the real world. Not so with a fresh from college "butterbar".