“Arwology: All out hand to hand fighting for commandos, military, and civilians” Gordon E. Perrigard
“American Combat Judo” B.J. Cosneck
“Defendu” W.E. Fairbairn
As to the technical / prescriptive methods, take what works for you (what has been proven to work) and leave the rest. Setting all that aside, the thing I enjoy the most about these books are the stories about real American heroes.
Like the G.I. Joes of my youth: A special mission force fighting to defend human freedom.
Men who were called upon to use their skills and experience to stop bad men in the most difficult of circumstances. Men who often stood shoulder to shoulder with the troops they trained going on missions behind enemy lines. In this era of internet experts and tactical instructors who have never kicked a door, cleared a room, or controlled a violent subject - that is very refreshing.
The word Samurai can be defined as one who serves.
Using the skills you have developed in the arts of war in the service of others.
How are you serving others?