After reading Sosarin's post I feel obliged to add a little of my own. I'll be using certain parts of my essay as I feel that they apply here. As odd as it may seem etiquette is very important in a military environment for a number of reasons. First off is the general behavior and appearance of a soldier. If a soldier with poor etiquette, walking through an airport in his dress uniform, jamming out to music doesn't care about the impression he gives than most likely the impression he'll give off is a bad one. There were many times in history where peace was fragile and avoiding a world war was achieved solely on proper etiquette. Such as during the cold war with the Kennedy administration during the Cuban missile crisis, or during the early years of the pacific theater dealing with china as a potential ally. In short, etiquette can be all that stand between a full scale nuclear war or the loss of an important ally. You shouldn't automatically expect someone to respect you if you don't respect them in return. For example, a higher ranking officer or NCO could give you an order that you don't necessarily agree with but you'll follow it anyways, not because you like them necessarily but because you respect them. Respecting and liking someone are two completely different things. For instance, you could hate someone's guts, not stand to be around them at all. But I can guarantee you if he takes a bullet on the battlefield any real soldier would be rushing out at the risk of his own life to save him. Not because he likes them, but but because he respects them. Many good things can come of showing respect. It could be anywhere from a compliment to a promotion for being an outstanding soldier. A good example of this would be giving an officer carrying a handful of paperwork the greeting of the day. While you didn't salute him, given the circumstances a greeting was the least you could do. For all you know he could've been having a bad day and walking by him without acknowledging him could've sent him over the edge and made him about face so fast you wouldn't know what hit you. But then again, for acknowledging him, or even holding a door for him as small as the action may have seemed he might remember your face and recommend you for something in the future.