While under direct fire, soldiers must be prepared to function, receive, and carry out orders proficiently. Over the din of combat, the command must be delivered loudly and distinctively enough for everyone in the element to hear. It must be given in a tone, cadence, and snap stern enough to evoke a correct and immediate response. A voice with the right qualities of loudness, projection, distinctness, and inflection, enables a commander to obtain optimal results. These results can only be adequately achieved when delivered from the diaphragm. When an officer uses his diaphragm in this way, he can control his pitch, tone, and volume of his directive for maximum results.