A "bladed" posture where the left foot is placed in front of the right foot, the left pointing forward and the right pointing off to the side at a 90° angle to the left foot (heels on the same imaginary line which intersects your point of focus). Arms are relaxed while being held away from the body, motionless yet posied for use (hands are generally open, palms pointing down, more or less horizontal from hand to elbow). The right hand should be at waist level, approximately 8 to 10 inches away from your navel. The left hand is held at heart level, directly over the left foot.
The posture known as Bahng Uh Jah Se (i.e. Defense Stance or Right Guarding Stance), is identical to Kong Kyuk Jah Se except that it's the right side of the body that points forward, and all right/left designations given in the explantion for Offense Stance being transposed accordingly. The terms offense/defense for these two postures stem from the miliary rule to initialte movement from a feet-together posture by moving the left foot first. Thus, you would need to step forward to put your left side toward the front (an OFFENSIVE movement) and you would need to step backward to make your right side be in front (a DEFENSIVE movement).
Many technique sets in Kuk Sool Won begin with one person in Offense Stance and the other person in Defense Stance, the lead foot of each person approximately one stance width apart (and all four feet on the same imaginary line). In fact, the very first set of techniques (i.e. Ki Bohn Soo) uses just such a set up, and therefore this arrangement of two people is known as Ki Bohn Jah Se.