Self-Defense Marine Martial Arts - Round Kick Defense
Human Weapon :

Self-Defense Sambo - Leg Sweep
Human Weapon video tutorial: Leg Sweep or leg trip refers to a technique in which the combatant performing the leg trip uses his or her own leg(s) to off-balance an opponent, hence causing the opponent to fall to the ground.

Self-Defense - Judo - Tomoe Nage
Human Weapon: This video tutorial shows you how to do a Tomoe Nage. Tomoe nage (巴投) is one of the traditional forty throws of Judo as developed by Jigaro Kano.