Then the Zouaves broke into the fight once more, scattered on the ground, some prostrate on their faces, others with limbs huddled together as if dead—while many stood with their eyes to the sun, waiting the onset of the Black Horse cavalry that came galloping upon them from the woods. A few of these eccentric warriors were making a feint of defending themselves while the cavalry stood hesitating on the margin of the wood, but the rest seemed to have been cut down by the sweep of some deadly cannonade, and lay in the grass like a flock of partridge shot down in full flight. Out from the woody cover the Black Hawks thundered on, their arms flashing and the jetty necks of their horses flinging off the sunshine. The handful of Zouaves now flocked together in front of their prostrate comrades, seeming doubtful whether to fight or flee. On the black chargers came, champing the bit and tossing their heads angrily, the riders ready to trample the scattered Zouaves under hoof, as too easy a conquest for their flashing swords. A sudden, sharp ringing yell, and the dead Zouaves sprang to life, confronting the horsemen in a wall of bristling steel. A sharp volley—the horses reared, plunged, and ran back upon each other, some falling dead with quivering limbs as the fatal bullets rent their vitals, and gushes of blood crimsoned their coal-black chests; others staggering from a dozen wounds, rushed madly through the broken ranks of the terrified cavalry. Before the chargers could again be brought into line, the Zouaves flung away their rifles, and sprang like tigers upon them. Seizing them by the bit, they wound themselves up over their arched necks—a flash of bowie-knives gleamed like chain-lightning across the ranks, and many a wild black horse plunged on riderless with burning eyes, streaming mane, and ringing empty stirrups, headlong through the already half-disorganized ranks, and scouring over the battle-field, scattering dismay as they went. A last struggle now ensued, with desperate men and broken forces—then a retreat, so wild, so impetuous and reckless, that all organization was given up. Regiments lost their officers, broke, mingled into others, and rushed across the field a headlong torrent, which no human power could arrest. On they went, plunging through the sea of carnage that surrounded the hill—the surging, angry broken waves of a brave army hurrying tumultuously from what had been a victorious field but an hour before. Down from the hills, broken into frightened masses, pallid, reeling with exhaustion, they swept onward like a whirlwind, bearing the protesting officers with them, or trampling them under foot; for human life was nothing to them in that hot, mad race. The contagion of retreat spread like a prairie fire, from one point of the battle-field to another, scattering the army in wild confusion.