During the Sengoku period in Japan (The Age of Civil War), Nobori were used to denote different army units in the civil war and were also used in large numbers to create intimidating displays of warrior flags; which I'm sure looked really cool.
Today, they're used basically for the same thing. Dogfight 幟 - available for use with your armies.
Rectangular banner measures roughly 180cm x 60cm
Black print on white flag with updated 2018 design
Made in Japan