A General can be accompanied by a special Standard Bearer carrying either his personal banner or the Battle Standard of the army itself. This Battle Standard does not have to move along with the General but it is most useful when he is close by.
The Battle Standard Bearer cannot be the army's General (unless specified in the character's army list entry), even if he has the highest Leadership in the army. Unlike ordinary standards the Battle Standard cannot be passed on if its bearer is slain. Should the bearer be slain then the Battle Standard can be captured in the same way as a unit banner.