Technically you can, most classes hold as aspect of meele fighting which are more determined by stats. So by going generic fighter you're choosing str most likely and are a strength based fighter. Going rogue would mean you are more of a dexterous fighter and thus gain the ability for being nimble enough to sneak up on someone. I -HIGHLY- doubt the muscled brute in full plate, or other clinky armor is going to successfully sneak up on anyone.
However you can multiclass over into Rogue to begin gaining such to bring the two fighting styles together as you're char learns them. Which is exactly how the cross skills work. You wont ever be as good a rogue as someone who focuses only on learning such, or as good as a fighter who only focuses on battle technique what focuses on strength. With skills you sacrifice points else where to take other skills.
