ESO Morrowind offers battlegrounds
Battlegrounds are designed to be short, bloody affairs between three teams of four players (4v4v4). Unlike PvP in Cyrodiil, teams in Battlegrounds are not bound by Alliance, but are made up of players from any of the three factions. In Battlegrounds, you're not fighting for Queen Ayrenn, High King Emeric, or Jorunn the Skald-King, but for the Pit Daemons (Green), Fire Drakes (Orange), or Storm Lords (Purple). The glory and spoils are yours for the taking!
Joining a Battleground is a similar process to queuing for a dungeon. Simply navigate to the Group & Activity Finder menu and select Battlegrounds. You can queue solo or as a member of a party, and you are able to specify a desired level range (10-49 or 10-50) with the game type randomly determined. Like the Alliance War, you are able to join a Battleground as long as your character is at least level 10, but you will also need to own a copy of ESO: Morrowind to play (either via upgrade or the full game). When entering a Battleground your character is battle leveled in the same way they are when entering Cyrodiil.
There are several modes for the Battlegrounds: Team Deathmatch, Capture the Flag, and Domination. There are also three arenas for players. Ald Carac, Ularra, and Foyada Quarry.
Learn more about Elder Scrolls Online here.