If you’re into fast-action military fiction,one of the top authors is Dale Brown.I’ve read many of his books & have yet to get a dud.His latest book is called ‘Starfire’.
The hero of previous stories,Patrick McLanahan was injured so badly that he can only survive in the life-support systems built into a 12 foot infantry combat robot shell.Hit squads are being sent to kill his son Brad.
Patrick gets a close-fighting expert to train him in Joseon,later called Cane-Ja.This was followed by Krav Maga .He goes on to describe the goals of Krav training,etc.
Really good book.