private async Task RussianRoulette(Player player)
        {
            // Kill units locally
            List <GeneralizedUnitHelper> killedOnes = new List <GeneralizedUnitHelper>();
            int    unitNumber = _generalizedUnits.Count;
            Random random     = new Random();

            while (_supportAmount < _supportNeed)
            {
                int killIndex = random.Next(unitNumber);
                GeneralizedUnitHelper toBeKilled = _generalizedUnits.ElementAt(killIndex);
                _supportNeed -= toBeKilled.SupportNeed;
                killedOnes.Add(toBeKilled);
                _generalizedUnits.RemoveAt(killIndex);

                unitNumber--;
            }

            // Update player
            var unitGroups = killedOnes.GroupBy(u => u.SquadUnitId).ToList();

            foreach (var group in unitGroups)
            {
                int squadUnitId          = group.Key;
                int numberOfUnitsInGroup = group.Count();
                _squadService.DecreaseUnitTypeNumberForPlayer(player, squadUnitId, numberOfUnitsInGroup);
            }
        }