Poorly photocopied 1945-08-01 Ju-Jitsu training handbook for U.S. Navy special forces teams. Don't try this at home.
"The student who expects to be successful in hand to hand combat must maintain a physically fit body and an alert mind. He must practice until he has gained real speed and precision in the execution of these forms and should review frequently to maintain his skill. Boxing and Jiu Jitsu should not be considered rival systems of fighting. They supplement each other perfectly and the smart student of hand to hand combat will acquire a knowledge of both."
Also see Hand to Hand Combat In 3 Parts and Defensive Tactics: Your Personal Weapons Of Defense, and FM 21-150 Unarmed Defense for The American Solider (June 30, 1942)
"Hand to hand combat, an instructional manual prepared for amphibious scouts"--Cover