myrmidon

1. [n] (Greek mythology) a member of the warriors who followed Achilles on the expedition against Troy
2. [n] a follower who carries out orders without question

When the day came round for my return to the scene of the deed of violence, my terrors reached their height. Whether myrmidons of justice, specially sent down from London, would be lying in ambush behind the gate? Whether Miss Havisham, preferring to take personal vengeance for an outrage done to her house, might rise in those grave-clothes of hers, draw a pistol, and shoot me dead?

Charles Dickens, Great Expectations

The Senor Don Alfonso stood confused. Antonia bustled round the ransacked room. And turning up her nose, with looks abused Her master and his myrmidons, of whom Not one, except the attorney, was amused. He, like Achates faithful to the tomb, So there were quarrels, cared not for the cause, Knowing they must be settled by the laws.

Lord Byron, Don Juan