Each of your Remnant Stormtroopers gets Ferocity and "Whenever this unit attacks, your opponent may put 2 damage counters on the defending unit and retreat it. If he or she does, the attack ends."
Keywords
Ferocity
Ferocity: An isolated, static ability that means, "Damage from this unit can't be prevented." Damage that can't prevented includes all damage coming from the unit with Ferocity, including damage from attacks, Ambush, Deflect, Retaliate, and other abilities. Units with Fortitude override this ability, and can prevent damage to themselves from units with Ferocity.