The European Munitions chit is on the Morale Track. The event card calls for the Confederates to Battle on a Union Track where it is impossible to drive back the Union Army. For example, the Union Army is on an Advanced Base.
In this circumstance, is the player obligated to conduct the "pointless" battle to determine if the result is a tie? Clearly, all tie results are significant for the advance of the European Munitions chit. Or can the player actually forgo the Battle roll and not worry about any tie results?