e4k-data/data/allianceBattleGroundMaps.json

All recent data from Empire: Four Kingdoms

[
  {
    "mapID": 1,
    "name": "LineBreak"
  },
  {
    "mapID": 2,
    "name": "GroundZero"
  },
  {
    "mapID": 3,
    "name": "HiddenStar"
  },
  {
    "mapID": 4,
    "name": "Wastelands"
  }
]