Although its ideals, policies, and beliefs have been revised and membership has changed over time, it is the same Horde inherited by Thrall of the Frostwolf Clan (son of Chieftain Durotan) through Warchief Orgrim Doomhammer.
However, since the mantle of Warchief was passed on to Garrosh Hellscream, the Horde's alliance with other races has began to suffer heavily due to Garrosh's warmongering. A direct example of this are the trolls under Vol'jin leaving Orgrimmar because of Garrosh's hunger for war and Sylvanas Windrunner ignoring the warchief's commands and using her plague on her enemies.
Eventually, the Horde was fractured in two and a civil war erupted, between Garrosh's Followers and the Darkspear Rebellion led by Vol'jin. With the help of the Alliance, the rebels ultimately overthrew Garrosh Hellscream. He was then arrested to stand trial in Pandaria. Thrall the Orc appointed Vol'jin of the Darkspear Trolls then as the new Warchief of the Horde, and King Anduin Lothar agreed to put an end to the war. However, the war between the Horde and Alliance continues to rage on.
Major member races include: