The well armed soldier is not more effective than a well prepared soldier.  Using this premise, Matser Isidro deals with an unresolved matter for professionals in the army - working with a combat knife.  He studies the main principles, the aims, the most common mistakes and the techniques.  As well as the application of each of the modes of combat, such as knife against knife, left handed opponents, smooth cuts, empty-hand techniques against knife, bayonet and firearms.  Also subduing the guard and bow as well as crossbow exhibitions.  This DVD breaks with everything which was established in hand to hand combat techniques, with the so called silent weapons.