Much emphasis is often placed on the training Marines go through and it Is rigorous. That is only one aspect of what makes up the spirit of a Marine, but it is the easiest to define...
Look at the recruiting posters and you'll get a little more of the picture. When the Army's slogan was "Be All that you can Be", the Navy's was "It's not just a Job, it's an Adventure", and the Air Force's was "Aim High"; The Marines was "The Few. The Proud. The Marines." Straight up you get this picture: The Army is there to help you grow, learn, become something better. The Navy is there to provide an excellent adventure. The Air Force will help you to achieve lofty goals. And the Marines say, "We dont take everyone because we are very selective. You aren't coming here to Get something, you are coming here to Give something. And it will be worth it."
During boot camp and OCS, you are treated to an incredible culture shock. Your drill instructors will show you on the first day the most effective way to commit suicide and ask that you do so in the shower so that your fellow recruits will have an easier time cleaning up the mess. They berate you and encourage you to quit. They repeat constantly how easy it would be to do so, how all the pain and suffering would end. Those you care about and who care about you are far away. Noone here cares about you, because you are not worth such regard, yet. You lose all identity other than a nickname you are given by your new tormentors. Until the end of basic training, your opinion means nothing. Noone cares what you think. Noone cares who you are. All that matters is that you learn some very basic things.
1) When you are told to do something, you do it Now.
2) Why is no longer in your vocabulary. Only What, When, Where, and How.
3) If you fail to comply, you will cause others to suffer.
4) Life is not fair. Justice is not universal. Pain is the price of success.
5) Duty is a reward, not a goal. Courage is self sacrifice. Honor comes from Fidelity. Glory is never found in one's self, but only in the success of your brothers.
6) You are a weapon. That weapon exists for one purpose only - to preserve a dream of freedom. You will destroy anything that opposes that dream with extreme prejudice and no apologies.
7) The human body is very fragile and easy to break if you know how. Military hardware is not as fragile but no less susceptible to the right methods. Death and destruction are never the goal; They are only the means to victory. The true victory is Peace.
One day finally comes after months of physical and mental abuse and hardship. Your tormentors walk up to you and tell you that you have been judged worthy. They will shake your hand or salute you as appropriate, but in either case, you feel a seachange in your heart. No longer are you one of the masses of civilians. You are now and forever a member of a small elite corps whose lineage stretches far back beyond centuries, beyond even the millenia. Many other names have been given to one such as you..
Spartan
Praetorian
Samurai
Paladin
Musketeer
Janissary
Gurkha
Today you have earned the right to join their proud ranks because today, you Are a Marine.
-Elgalad