Sigel's Germans, supported by the splendid Pennsylvanians under Reynolds, advanced from the Henry Hill to hold Jackson till Pope could come up and finish him. The numbers were about even, with slight odds in favor of Jackson. But the shock was delivered piecemeal. Each part was roughly handled and driven back in disorder. And by the time Reynolds had come to the front Lee's advanced guard was arriving. Then eighteen thousand Federals marched in from Centreville under Reno, Kearny, and "fighting Joe Hooker," of whom we shall hear again. Pope came up in person with the rest of his available command, rode along his line, and explained the situation as founded on his ignorance and colored by his fancy. At this very moment Longstreet came up on Jackson's right. Reynolds went into action against what he thought was Jackson's extended right but what was really Longstreet's left. Meanwhile the Centreville troops attacked near Bull Run. But that dashing commander, Philip Kearny, was held up by Jackson's concentrated guns; so Hooker and Reno advanced alone, straight for the railroad line. The Confederates behind it poured in a tremendous hail of bullets, and the long dry grass caught fire. But nothing stopped Hooker till bayonets were crossed on the rails and the Confederate line was broken. Then the Confederate reserves charged in and drove the Federals back. No sooner was this seen than, with a burst of cheering, another blue line surged forward. Again the Confederate front was broken, but again their reserves drove back the Federals. And so the fight went on, with stroke and counterstroke, till, at a quarter past five, twelve hours after Pope's first men had started from the Henry Hill, his thirty thousand attackers found themselves unable to break through. Pope wished to make one more effort to round up Jackson's supposedly open right. But Porter quite properly sent back word that it was far too strong for his own ten thousand. In reply Pope angrily ordered an immediate attack. But it was now too dark, and the battle ended for the day.