When you're eighteen, you think you know a lot about everything, but in reality, you don't know very much about anything. When you enlist in the Marine Corps, the drill sergeants have a way of impressing that fact on you. The sadistic bastards rip apart everything you thought you knew and then teach you about reality. It doesn't stop there either. From Recruit Training, you go to the School of Infantry, and it happens all over again.
When you get out of Infantry School, you're pretty confident. You've learned how to do everything the Marines taught you to do, and along the way, you picked up a little about life. Since a lot of that additional training takes place in bars full of available women, you're all set to go out and live life. You can take on anything with a rifle, bayonet, grenad
