Once the enemy was deemed sufficiently weakened, the noyans would give the order. The drums would beat and the signal flags wave, telling the lancers to begin their charge. Often, the devastation of the arrows was enough to rout an enemy, so the lancers were only needed to help pursue and mop up the remnants. At the Battle of Mohi, the Mongols left open a gap in their ranks, luring the Hungarians into retreating through it. This resulted in the Hungarians being strung out over all the countryside and easy pickings for mounted archers who simply galloped along and picked them off, while the lancers skewered them as they fled.