public void UnregisterArmy(OverworldArmy army)
 {
     _Armies.Remove(army);
 }
 public void SetOverworldArmy(OverworldArmy army)
 {
     _OverworldArmy = army;
 }
 public void RegisterArmy(OverworldArmy army)
 {
     _Armies.Add(army);
 }