function assignSpartansToBattle(uint _warriors) onlyIfInTime external returns (bool success) {
        assignWarriorsToBattle(msg.sender, spartans, _warriors, MAX_SPARTANS);
        sendBattleTokens(msg.sender, _warriors.mul(BTL_SPARTAN));
        
        WarriorsAssignedToBattlefield(msg.sender, spartans, (_warriors / WAD).mul(BP_SPARTAN));
        return true;
    }