The art and techniques of Samurai Jiu Jitsu can be traced back to Japan in roughly the year 1100 A.D., where a samurai named Yoshimitsu developed an art called Daitoryu Aiki Jujitsu. Yoshimitsu was a General in the Minamoto family, and his art was kept  secret for centuries. From that art, many ryus (schools) developed. Some with their own unique techniques and methodology, and others that were similar. 

The name, "Samurai Jiu Jitsu" is very likely a Western moniker, given to the art by Americans and Europeans who studied the techniques during the early part of the 20th century. The techniques are very similar to those of Kaisho Goshin Budo Taiho Jitsu Ryu. 

The art came to the United States via military personnel who brought the techniques back with them from Japan. During the Second World War, it was taught to several elite fighting  units (Rangers, 1st Infantry, Blue Spaders) to name a few. 

The late Grand Master Pete Siringano Sr. received his training at the Samurai Jiu Jitsu Academy in Denver, Colorado. The Academy was under the direction of one Lt. Col. John Killegrew. The training was Spartan, by today's standards. In the dead of winter, members would train outdoors. The typical workout consisted of Atemi Waza, Kansetsu Waza, Te Waza, Geri Waza,  Hiza Gashira Ate,  Katame Waza, Nage Waza, Shime Waza, Randori, Ukemi and weapons.

The techniques of Samurai Jiu Jitsu are all inclusive. Everything from single unarmed attacks to multiple armed attacks is covered. Practitioners also practice Jiu Kumite to hone their sparring skills.

At the time of his passing in 1994, Grand Master Sr. was the highest ranking (and only living) exponent of Samurai Jiu Jitsu. The techniques and system were passed on to his son, who trained with him for 33 years, Grand Master Pete Siringano Jr.