Shortly after The Gaang arrived on Kyoshi Island, they were captured by the Kyoshi Warriors. After they found out that Aang was the Avatar, they treated him like royalty. Sokka asks the Warriors to teach him, which they do, and a spark lights between Suki and Sokka. When Prince Zuko and his warriors attacked the island, the Warriors defend the Island, and with the help of the Gaang, defeat them.
The Kyoshi Warriors decided they wanted to help the Earth Kingdom and left to help it's refugees. For more information on Suki's short journey with the Gaang, see her page here.
While looking through a forest, the Kyoshi Warriors found Appa, and helped Appa who had been through quite a bit after being kidnapped by Sandbenders and being abused in a Fire Nation circus. The Warriors fed him and cleaned him, and also took off his shackles. After they helped Appa they were attacked by Ozai's Angels (Princess Azula, Mai, and Ty lee). Suki tells Appa to escape, which he does. After a toigh battle, the Kyoshi Warriors were beaten, and then imprisoned.
During the Day of Black Sun; The Eclipse, Azula taunted Sokka, saying that her favourite prisoner kept mentioning him, and he'd come to rescue her. She was talking about Suki, so we can assume that the Kyoshi Warriors are still alive.
Clothing and weapons
The Kyoshi Warriors wear similar clothing to Avatar Kyoshi.
They have protective green armored kimonos and their faces are painted white for intimidation and red for honor and loyalty, resembling that of Avatar Kyoshi, which originated in The Flying Opera Company. Also, some of the members where chopsticks in their hear.
Their main weapons are their fans and katana's but their defensive weapons retractable forearm shields. They also use the Kyoshi Warriors fans as an extension to there arm or as a blade. They also where metal headbands.