IAIDO - the way of the sword, is a martial art form that began as an off-shoot of kenjutsu. It was developed as a defensive method to counter surprise attacks and enemy raids in fifteenth and sixteenth century Japan.
The purpose of iaido was to slay an opponent with one stroke of the sword immediately after unsheathing it. In order to create such a defense system, situations and circumstances of surprise attacks were studied to devise a systematized way to use the sword effectively against many forms of attack.
The practice of this martial art requires a solemn spirit, extreme concentration, and skill. Every motion, such as the movements of the arms or legs and body, must correspond to the offensive motions of the opponent, and it is of utmost importance that a person follow the rules of discipline that have been carefully and thoroughly applied.