Some years ago I came across a book that included unarmed, gunfighting and knife techniques.
The “Save Your Life Defense Handbook” by Matt Braun. An ex green beanie, he boiled down much of what was taught into digestible portions.
The firearm portion is certainly dated today, but the tactics are still good. And much has come full circle.
But the knife fighting portion is quick and dirty with good info.
Ya, some debunked bits but it was 40 years ago and a lot of the info hadn’t been fully tested.