The ōdachi (great sword) or nōdachi (field sword) had a blade 3-5 feet with a shaft about 2 feet long
was unsuitable for close-quarters combat and used mainly from horseback.
Most popular during the Edo Period, it had to be carried on one's back and was impossible for the wielder to draw it quickly except for Sasaki Kojiro.
Sasaki Kojirō (circa 1585 – April 13, 1612) is most remembered for his death battling Miyamoto Musashi
using the "Monohoshizao" (The Laundry-Drying Pole)
In 1605, Kojiro created his most feared technique in feudal Japan called Tsubame Gaeshi (Turning Swallow Cut), which was so quick and precise that it could strike down a bird in mid-flight.
This technique involved fierce and swift cuts downward and then immediately upwards,
like an eagle climbing again after swooping down on its prey.
The importance of the nodachi died off after the Siege of Osaka in 1615
after the Bakufu government prohibited swords above a certain length.
And Arigatogozaimasu, Cowabounga-san, for this legendary and BEAUTIFUL ōdachi