You were a well known person in the Corps. Levi sent you to go do a mission, by yourself.

You were outside the walls for this mission.. You were on your horse, your horse was galloping until it got shot down. You suddenly flew off your horse, and landed on the grass.

A titan was walking over to you, it was around a mile away from you. It started to run, and you got crushed to death from how heavy the titan was..