myrmidon       
noun [ C ]  formal uk/ˈmɜː.mɪ.dən/ us/ˈmɜ˞.mə.dɑːn/
 (无情)执行命令的下属,忠实的追随者
someone who follows and obeys a powerful person or authority, even when this means doing bad things for them
  They each claimed that they were only doing their job - the standard reply from the myrmidons of authoritarian regimes everywhere.  他们每个人都声称自己不过是在做份内工作而已——这是各地专制政权忠实下属的标准回答。