An Army Corps on the March


  With its cloud of skirmishers in advance,
  With now the sound of a single shot snapping like a whip, and now an
      irregular volley,
  The swarming ranks press on and on, the dense brigades press on,
  Glittering dimly, toiling under the sun—the dust-cover'd men,
  In columns rise and fall to the undulations of the ground,
  With artillery interspers'd—the wheels rumble, the horses sweat,
  As the army corps advances.
by Walt Whitman
Written around 1891. 55 reads.