If you look at some pictures of men from the Amish culture, then you will notice that they have beards but no mustaches. This is actually a part of their tradition that started in those days when military men used to have mustaches. Since these military men ill-treated people from the Amish community while considering them to be part of those groups that waged wars in Europe, Amish men decided to remain dissociated from such groups. As a boycott gesture, they instructed all their men not to grow mustaches.