1) Weapon of Indonesia 
An Arbir is an Indonesian weapon, a halberd, approximately five feet (1.5 m) long. The plane of the blade has a shallow groove running along it that allows the user to determine exactly where the cutting edge is at all times. The Arbir is one of three special weapons used by members of the Persatuan Pentjak Silat Selurah Indonesia (PPSI). ...