Here's some descriptions of the CQC moves straight from Mr Mori:
Basic Posture
Relax when standing. Do not have unnecessary tension in your body so that you can move quickly. When putting away weapons, do so one by one. Look around and make sure you don’t hurt anyone in the process.
Stun by Blow
This is useful when you are too close to attack with a gun. Determine where the attack is coming from, and shift the focus of the enemy attack off of yourself. If the enemy comes punching at you, move to the right and dodge the enemy hand with your left hand. Then hook the serration of your knife onto the enemy's left arm and pull the enemy towards you. Due to reflex, the enemy will pull back and try to stay in position.
Utilize the enemy's pulling back and move forward. Hook your left leg onto the enemy's right leg and put the enemy off balance. While using your natural forward motion, stun the enemy by a blow in the enemy's chin. With the leg hooked, the enemy cannot pull back further. And with his/her chin being pushed against, he/she cannot move forward. The enemy is off balance and also defenseless.
Throw From the Front
This move is useful when fighting an enemy with a rifle. To shift the focus of the enemy attack off of you, take a slanted pose and approach the enemy quickly. Hold the enemy's right hand (mainly the fingers) with your own gun's handguard. Push it up so that the enemy gun points the other direction. At the same time, hook your left leg onto the enemy's right leg. Push, and the enemy will lose balance easily.
Throw From Behind
The enemy suddenly attacks you from behind. Your arms are held, and you cannot use your weapon. Do not move forward to try to get the enemy off of you. Instead, lean back towards the enemy by shifting your center of gravity to the back. Seek an opening and tilt yourself diagonally and pull out your right leg. Press your elbow against the enemy's chest. Hook your right leg onto the enemy's leg, and at the same time, turn your body and push the enemy backwards.