During the afternoon, while Jackson's tired men were lying sound asleep in their ranks, Jackson himself was roused to see captured orders which showed that some Federals were crossing his front. Reading these orders to his divisional commanders he immediately ordered one to attack and another to support. If the Federals concerned were exposing an unguarded flank they should be attacked at a disadvantage. If they were screening larger forces trying to join the reinforcements from Washington or Aquia, then they should be attacked so as to distract Pope's attention and draw him on before the Federal union became complete, though not before Lee had reached the new Bull Run position the following day. The attack was consequently made from the woods around Groveton not too long before dark. It resulted in a desperate frontal fight, neither side knowing what the other had in its rear or on its flanks. Again the Federals were outnumbered: twenty-eight against forty-five hundred men in action. But again they fought with the utmost resolution and drew off in good order. The strategic advantage, however, was wholly Confederate; for Pope, who thought Jackson must now be falling back to the Gap, at once began confusedly trying to concentrate for pursuit on the twenty-ninth--the very thing that suited Lee and Jackson best. Early that morning the two-days' Battle of Second Manassas (or Second Bull Run) began with Pope's absurd attempt to pursue an army drawn up in line of battle. Moreover, Jackson's position was not only strong in itself but well adapted for giving attackers a shattering surprise. The left rested on Bull Run at Sudley Ford. The center occupied the edge of the flat-topped Stony Ridge. A quarter-mile in front of it, and some way lower down, were the embankments and cuttings of an unfinished railroad. On the right was Stuart's Hill, where Lee was to join by sending Longstreet in. The approaches in rear were hidden from the eyes of an enemy in front. The cuttings and embankments made excellent field works for the defense. And the forward edge of the Ridge was wooded enough to let counter-attackers mass under cover and then run down to surprise the attackers by manning the cuttings and embankments.