The first clash between the Alliance and Horde.
The Orcish Wars consist of the First War and the Second War, beginning when the Orcish Horde invaded the Kingdom of Azeroth in 592 K.C. and ending when the Alliance of Lordaeron defeated the Horde in 598 K.C. A further extension to the conflict can be considered the events of Beyond the Dark Portal, when the Alliance invaded the Orc homeworld of Draenor.