Captain Phasma's baton was a quicksilver baton utilized by Phasma, who held the rank of Captain, during the conflict known as the First Order-Resistance War.
Captain Phasma possessed and carried a quicksilver baton that was compressed within a containment field. Its primary function was for close-quarters combat situations, such as the one she engaged in aboard the First Order's flagship, the Supremacy. Upon activation, the baton would extend to its full length, featuring spearpoints at both ends. The baton's robust cylinder was constructed from a collapsible micromesh matrix, maintained by a containment field.
The baton's form varied depending on its state: when inactive, it compacted into a small baton; however, when activated, it would rapidly expand to its full size.
During her tenure as a stormtrooper Captain within the First Order, Phasma selected a quicksilver baton as her personal weapon. This choice was influenced by its resemblance to the tribal spears crafted from quicksilver, which were used by the tribe from her upbringing in a mountain range on the planet Parnassos. Indeed, Phasma's proficiency with traditional melee weapons highlighted her primitive background.
In 34 ABY, when the cruiser Raddus engaged its hyperdrive, causing significant damage to the Supremacy, Phasma employed her baton in a duel against Finn. This confrontation occurred after many of her troops were either disabled or killed due to the destruction caused by the Resistance ship. Finn, in turn, wielded a Z6 riot control baton taken from a fallen stormtrooper to fight Phasma. Despite Phasma's skill with the baton, Finn ultimately managed to defeat her with his weapon, incapacitating her long enough for the ground beneath her to give way, causing the baton to fall into a fiery abyss. Its owner soon followed it into the burning chasm.