What to do to get ranked up fastest on Star Wars battle front 2

When you're on a level,Ask people to follow you,you can only make 2-3 people follow you.
Keep the people you ask to follow you all the way till end of level.

On the bit where you see score's,go to you're score,on last page,you will see your rank,
Private, Sergeant, Lieutenant,Etc.

Its on the "Top Right".

(The highest rank you get is General lol cos clones,battle droids,rebels and storm troops only can go up to Commander but, its general,DUMB STARWARS GEEKS XD)