One of the most useful things in the book is the anatomy charts. There is some discussion as to how accurate the times are but no question as to the lethality.
One interesting one is how German army officers would commit suicide rather than fall into the hands of the Red army by having a buddy stab straight down through top of the shoulder next to the neck piercing the heart. It would be instant and painless. Not an easy one to make on an unwilling enemy though.