Mass the effects of overwhelming combat power at the decisive place and time. To mass is to hit the enemy with a closed fist, not poke at him with the fingers of an open hand. Mass seeks to smash the enemy, not sting him. No part of the force should ever be left without purpose. For every objective, seek unity of command and unity of effort.
Unity of command means that all forces are under one responsible commander.
Never permit the enemy to acquire unexpected advantage. Security enhances freedom of action by reducing vulnerability to hostile acts, influence, or surprise. Security results from the measures taken by a commander to protect his forces. Strike the enemy at a time or place or in a manner for which he is unprepared. Surprise can decisively shift the balance of combat power.