Shadowleaves

The Shadowleaves are a group of night elf Sentinels led by Shandris Feathermoon. They fought alongside the demigod Cenarius with the Nightblades, Moonhunters, and Starseekers against Grommash Hellscream and the Warsong clan. When the Nightblades destroyed one of the Warsong bases the Shadowleaves established in the destroyed base, from which they sent periodic attacks against the Warsong clan. However, when Grommash found the Chaos Well, he and his orcs drank from it and became chaos orcs. With their burst of power they attacked the night elves and killed Cenarius himself.

After Cenarius's death the night elves saw the outlanders as their enemies, Tyrande Whisperwind and Shandris Feathermoon were watching a base of the combined forces of the Human Expedition and the Orcish Horde and Tyrande decided to attack them while Shandris retreated to the Shadowleaves' base. When Tyrande was fighting the outlanders, Tichondrius, the Scourge and the Burning Legion appeared, destroyed the base and pursued Tyrande. The undead then attacked the Shadowleaves, but Shandris fended them off. Tyrande made her way through the Burning Legion forces and the outlanders while rescuing Shadowleaves and recruiting them to aid her in reaching the Shadowleaves base. Finally, they arrived at the base where she told Shandris that the undead that attacked her were sent by the Legion, their ancient enemies, and against that threat they had only one option: both of them left the base and went to awaken the druids.

Ultimately, several dryads of the Shadowleaves joined Tyrande near the Moonglade Isle.

Military forces

 * Shandris Feathermoon
 * Wisps
 * Night elf Archers
 * Night elf Huntresses
 * Dryads
 * Ballistae
 * Ancients of War
 * Ancients of Lore
 * Ancient Protectors
 * Trees of Eternity

Speculation

 * They may be referenced by the Shadowleaf Bow item, which is obtained after helping Shandris and her Sentinels fight the Twilight's Hammer.
 * If so, the Shadowleaves may then simply be Shandris' army in Feralas.