Yes, samurai did use nodachi swords. The nodachi, also known as ōdachi, is a type of Japanese sword that is characterized by its long length. It typically had a blade length of around 90 centimeters (35 inches) or longer, with some nodachi reaching up to 150 centimeters (59 inches) in length.

The nodachi was a two-handed sword that was primarily used by samurai warriors during specific historical periods in Japan, such as the late Kamakura period (1185-1333) and the Muromachi period (1336-1573). It was particularly popular among samurai cavalry and was used on horseback due to its long reach and cutting power.

The size and weight of the nodachi made it suitable for delivering powerful sweeping strikes and cutting through multiple opponents or heavily armored opponents. However, due to its size, the nodachi was not as maneuverable as shorter swords and required skill and strength to wield effectively.

Over time, the use of the nodachi declined, and it became less common as battlefield tactics and weaponry evolved. By the Edo period (1603-1868), the nodachi was largely replaced by the more versatile and practical katana as the primary sword used by samurai.