War paint

War paint is paint that someone puts on specifically for the purpose of wearing into battle. Hahn 's task force, the Kyoshi Warriors, and the Yuyann archers all war war paint, along with Sokka. Some war pain, like Sokka's, covers the entire face, whereas other's, like Hahn's task force's, only covers a small portion.

Water Tribes
The water tribes wear two kinds of war paint. The first is a full-face covering style worn by most warriors of the Northern Water Tribe, as well as by Sokka. The second is the three wavy lines worn on the forehead of Hahn's task force.

Earth Kingdom
In the Earth Kingdom, the Kyoshi Warriors are the only wearers of war paint. Their war paint is mainly red and white. Unlike the water tribe's war paint, the Kyoshi warriors wear their war paint all the time, not just when going into battle. Sokka, Aang, Ty Lee, Azula and Mai have both also worn this war paint, in addition to Avatar Kyoshi and the warriors that bear he name.

Fire Nation
The Yuyann archers are the only members of the Fire Nation (not including Mai, Ty Lee, and Azula when they were impersonating Kyoshi Warriors) to wear war paint. Their war paint is red and in the shape of a traditional "superhero mask" such as the one worn by green lantern.

Trivia
Sokka's war paint has marking's around the eyes that look like Wan Shi Tong 's eye markings.

Avatar Kyoshi's war paint is worn by the most people other than the people who normally wear it: Azula, Mai, Ty Lee, Aang, and Sokka.