Orcs of the South

Warlords: Call to Arms
They are described in Warlords: Call to Arms as "The Orcs of the South have been oppressed for a long time, and a deep hatred of all others has developed. They believe now is the time for vengeance."

The Orcs of the South are a faction in the land of Beneril.

Their unique units are Axe Thrower and Samurai.

Warlords 2: Rise of Demons
They are described in Warlords 2: Rise of Demons as "Southern orcs are skilled in the construction of chopping weapons."

Warlords: Epic Conflict
They are described in Warlords: Epic Conflict as "A much oppressed group of orcs that have a strong sense of honor."

Lore
Note, the following is fanon (fan-canon) and is NOT to be considered absolute canon