Henry Martyn Kieffer, The Recollections of a Drummer-Boy
“ When first the siege began, picketing was dangerous business. Both armies were bent on fight, and picketing meant simply sharpshooting. As a consequence, at first the pickets were posted only at night, so that from midnight to midnight the poor fellows lay in their rifle-pits under a broiling July sun, with no protection from the intolerable heat, excepting the scanty shade of a little pine-brush erected overhead, or in front of the pit as a screen. There the picket lay, flat on his face, picking off the enemy's men whenever he could catch sight of a head, or even so much as a hand ”
