Ok. So we've had a "Mission" system here. It's been posted up in crew for a while so I'll let you guys in on it.

E=1 Point
D= 2 Points
C= 3 Points
B= 4 Points
A/S= 5 Points

10 points = Chunin
25 Points after that = Jounin

The Dou Mission was worth a B and the defending the town was also worth a B. That means if you took part in both of them- you got 8/10 points towards becoming a chunin right there.

Tally your points and PM to me and you'll get your rank.
-Van