Being a simple backwoodsman more used to wearing buckskins than blues, I wonder if anyone can please advise me about sword knots. I realise that they were historically used to strap the sword to the wrist to prevent dropping it in battle, but they have now become ceremonial. Why do some regiments have them tightly tied with the acorn sticking out at the top while others let them hang loose? Why to some have a different end other than an acorn? What is the significance of the way it is attached or tied and does it matter?