private bool IsBattleValid()
{
if (Attackers.Count == 0 || Defenders.Count == 0)
{
return(false);
}
// Check to see if all units in the defense is dead
// and make sure units can still see each other
return(Attackers.AllAliveCombatObjects().Any(combatObj => Defenders.HasInRange(combatObj)));
}
