myrmidon

n. [ L. Myrmidones, Gr. Myrmido`nes, pl. ] 1. One of a fierce tribe or troop who accompanied Achilles, their king, to the Trojan war. [ 1913 Webster ]

2. A soldier or a subordinate civil officer who executes cruel orders of a superior without protest or pity; -- sometimes applied to bailiffs, constables, etc. Thackeray. [ 1913 Webster ]

With unabated ardor the vindictive man of law and his myrmidons pressed forward. W. H. Ainsworth. [ 1913 Webster ]