White to Green Belt official grading Syllabus... The origins of combat Jujutsu stem back to the samurai battlefields. The techniques were tried and tested in hand to hand combat. The art is thousands of years old: Kevin O’Hagan’s Combat Jujutsu © has brought the art into the modern day for self defense and close quarter combat. It is explosive and rapid fire and very short range. Volume 1 of this new DVD series guides you through the system from white belt to green belt. Packed with technique and information