three o'clock in the morning
But their efforts were vain against the resistless advance of Jackson . The peal of the Southern trumpets was heard above cannon and rifles , always calling upon the men to advance , and , summoning their strength anew , they hurled themselves upon the Northern position . Fighting hard , but unable to turn the charge , the men in blue were driven on again , leaving more prisoners and more spoil in the hands of their pursuers . The battle at three o'clock in the morning lasted but a short time . The sound of the retreating column , the footsteps , the hoof-beats and the roll of the cannon , died away down the turnpike . But the sound of the army marching in pursuit died , also . Jackson 's men could call up no further ounce of strength .