<prompt> Translate the following text to EnglishWanajeshi waliokuwa nyuma ya Muller wakawa kama askari wa mbao, na nyuso zao zikapotea mpaka walipokuwa wamepatana kwa usahihi.  <response>: The troopers behind Muller stiffened into wooden soldiers, all expression vanishing from their features until they matched each other in exact anonymity. 