Historically the Helvetii withdrew part way thru the battle.

Some quick comments and thoughts about that.

The Gaulish tribes are not know for their subtlety when it comes to tactics. I try to reflect that here, and if these leader ratings are worth anything your choices are pretty limited in any case!

 
[youtube http://www.youtube.com/watch?v=22vNpcl2_iw&w=420&h=315]