Great video!  Even though I spent a lot of time translating each page, your commentary is an excellent overview of what is in the book, so I found it quite interesting.

Some of this is true ancient Jujutsu which the samurai's would have used on the battlefield to end their opponents.
If just highlights the difference between watered down sports combat and battlefield techniques.

This is the real jujitsu from the Japanese.

I first studied Judo in the early 1960's and many of these techniques were taught by my Japanese sensei in NYC.  At age 13 I spared with a WW2 Marine Corps veteran.  It was his first day back on the mat since his service. I stepped in for a throw and found myself on the "torture rack" with a hand chop headed for the front of my neck.  I blocked it, he pushed me off his leg, apologizing profusely.   It was a flashback to hand to hand combat in the Pacific.  He bowed off the mat and never came back.

If you're looking for "lost" submission, etc. I've got plenty of recorded techniques for you to look at if you're interested.

I train in Taijutsu founded by Maasaki Hatsumi and we train  in Takagi Yoshin ryu Jujutsu

Thanks for your work, Chadi. I appreciate your open mindedness and thoughtful research into the traditional arts. Many people have gotten trapped in the mindset that modern MMA is the ultimate study for all applications.

Me*looks at dummy*
Dummy*starts sweating*
Thank you for sharing.

The Ashi Yori looks like a Texas cloverleaf from a less optimal angle. The breaking mechanisms are that of a calf slicer, where you use their own shin on the other leg to slice the calf. This is usually done from honey hole, which allows you to really apply your back into the submission.

Fascinating! Sometimes I wonder just how much of the 'new' self-defense and sport techniques we see these day are really just old forgotten work being re-discovered.

The torture rack look like a move in pro wrestling called the BACK BREAKER. Plus I see moves that resemble the fujiwari armbar , full boston crab,HALF/SINGLE LEG boston crab, etc. So it definitely a possibility that catch wrestling borrowed from japanese jujutsu which then went into pro wrestling. And yes pro wrestling also used the  armbar(also called the cross armbreaker). I do know that they also used the sleeper hold. Which was used in american catch wrestling while british catch wrestling GENERALLY forbid choke.

Koshi Hishigi is the Backbreaker Stretch

Hi Chadi....the "torture rack" technique is often demonstrated in military hand to hand combat manuals especially WW2, i believe this technique is in some of William Fairbairns books.
Thanks for posting another very informative video.
Train hard....fight easy
Best regards
Stefano.

Great content as always Chadi, I am looking forward for more JJJ content

The “Ashy Yori” is used in BJJ.  My gym is primarily a No Gi competition gym that focuses on MMA.  I am only a mid level BJJ blue belt and am no expert in leg locks.  Now we were training a few positions that end up in a similar situation as this “Ashy Yori” position.  A clear modification from the one in the photo that we do is to move more over to left hip and bring the right heal over on the hip of the opponent and bring the knee in.  That will lock the position.  Now for submissions there are multiple options from this position:  one is the straight ankle lock with the top leg, a calf slicer from the bottom leg on the top leg, and the heal hook.  I’m sure there are more.  We have a few high level brown belts that are down right thugs at catching these submissions from this exact position.  Sometimes they just make it there goal in life to setup this situation up and exploit it as often as possible.  I believe this position is referred to as “the honey hole” in the BJJ / MMA community.

5:55 It is the "leg lock # 4" in the video game WWE SmackDown! Here Comes the Pain. The breaking mechanism is like twisting a bunch of spaghetti sticks.

I learned daki kubi as a kid but we addinionally jammed our fist in the collar to block the artery more effectively. It makes it kinda safer since the opponent taps faster or goes to sleep before damage to the neck. I also learned yubi zume but by wrapping the thumb around the foot and compressing the metatarse into a medio-lateral arch you decrease the leverage needed for a break. Great vid as usual.

Oh my god! haha Most of those techniques are so dangerous that I understand why the japanese at the time of birth of kodokan didnt want nothing to do with jujutsu haha. Kano-shihan was really smart in changing the the techniques and name of his art.

Ashi yori looks like a less effective variation of the leg smash in the saddle. It is set up as they defend the heel hook. It's a heel hook/knee bar/calf smash combo

As always, very informative and sobering regarding the power of martial arts in actual situations.