after doing your training you became a member of the Survey Corps and serve for humanity. You are willing to protect humanity and win against the titans at all cost

You walk into the barracks and stop and salute once you see commander Erwin. He looks at you for a second and smirks a little as he comes over to you. ”No need to salute every time, cadet. You must be new I assume?” He says while Captain Levi comes over behind him with a very judgmental look on his face about you