Arming Sword

From Karate, Kungfu, Wrestling, Mixed Fighting Information Source

With the appearance of the Longsword the simple, a single-handed weapon became known as a short sword or Arming Sword came into existence. It was usually hung from the belt of the knight, while his longsword hung from the saddle. In the mid-15th century treatise How a Man Shayl be Armyd, the author advises: “his short sword upon his left side in a round range all naked to pull out lightly....and then his long sword in his hand."