Unofficially known by its colloquial moniker of M81, the woodland pattern was the default camouflage pattern issued to United States military in 1981. The M81 woodland pattern has been one of the most duplicated and modified camouflage patterns ever designed, seeing service with military forces around
the world. This military pattern continued to be used for the U.S. until its replacement around 2006. It is a four color, high contrast disruptive pattern with irregular markings in sand, brown, green and black.