When i saw the trailer for the first time, something hit me when i saw the Wookiee rise (the one with the helmet).
I ones saw this movie about three hundred Spartans( Spartans are known for those cool looking helmets with mowhawks on them)that fought Perzians for the faith of Greece. I really like the comparisons Lucas makes to ancient Mythologies, it's his way of paying respect to the world's Hystory i guess, anyway I think it would be cool that the Battle of Kashyyyk would somehow be linked to this ( or partially).
Here's a link to that Myth:
http://www.drudge.com/discuss/viewTopic.php/19089