Inexorable Advance -
At the start of this Unit's activation, you may choose an allied Galactic Empire Supporting Unit. Each character in the chosen Unit may [Advance]. Then, if any characters [Advance], the chosen Unit suffers [Damage].
If Stormtrooper Sergeant uses this ability on a unit whose characters are engaged with an enemy character that is not wounded, would the friendly characters [Dash] instead of [Advance]? If so, would the friendly unit still suffer [Damage] if the only movements performed were [Dash]?