The Battle Charge is an Attack spell available in Fable, Fable: The Lost Chapters, and Fable Anniversary. When using this, the hero will knock over any enemies in his path (some bosses and trolls are unaffected). The distance that you charge and the force with which you hit both depend on how much you have upgraded the spell.
Battle Charge is almost the same as Assassin's Rush, except you hit the enemy instead of teleporting behind him. This can be helpful when overwhelmed or when you want some breathing room. Otherwise, using Assassin's Rush may be faster when disposing of an enemy.