Being aggressive won't always help you get what you desire, the world doesn't work like that. When you're aggressive you sound like a bitter, know-it-all person. Most people can't deal with that, and instead of getting your way you could get someone to be aggressive to you and teach you a lesson. So why be a bitter aggressive person rather than turning it down a notch. Chill enjoy life, it's too short.
If you want to serve but don't want to be in combat, sadly your gonna have find another job unless you want to do infantry.
Answer:
Patience And Manners
Explanation:
they are waiting for their teacher to get done which is manners because their being nice to the teacher and its patience because their waiting nicely.