HE HADN'T HEARD OR seen a thing. And now the fog was full of thundering wings and shrill screams of triumph. Below the walls, where the ground-mist hung in stagnant whorls, a host of half-seen bodies crowded out of the wilderness into which no civilized man had ever gone. The rapid-fire pistol bucked and snarled in Tex's hand. Captain Smith, lying on his belly, called orders in his crisp, unhurried voice. C Battery on the northeast corner cut in with a chattering roar, spraying explosive bullets upward, followed by the other three whose duty it was to keep the air clear. Tex's heart thumped. Powder-smoke bit his nostrils. Breska began to whistle through his teeth, a song that Tex had taught him, called, "The Lone Prairee." The ground-strafing crews got their guns unlimbered, and mud beg