Iaido is a martial art which began in Japan,
   during 16th century, when war and fighting 
   were common. It is a series of "katas", in   Please download Java(tm).
   which the Iaidoka, practitioner, draws the 
   sword in response to an attack, disposes of
   the opponent, and returns the sword to the 
   scabbard. It is the practice of sword technique.

   The characters in the name "Iai" indicate a 
   harmony with the environment and a readiness
   to deal with any situation. The practice of Iai  
   leads to development of these qualities. 
   The "do" in Iaido is the same as in Kendo, 
   Judo, etc, and means "the way".

   More details about Iaido
   Iai Hand book