and were ready to take position upon the battlefield whenever the 13th
corps could be got out of the way.

The country in this part of Mississippi stands on edge, as it were, the
roads running along the ridges except when they occasionally pass from
one ridge to another. Where there are no clearings the sides of the
hills are covered with a very heavy growth of timber and with
undergrowth, and the ravines are filled with vines and canebrakes,
almost impenetrable. This makes it easy for an inferior force to delay,
if not defeat, a far superior one.

Near the point selected by Bowen to defend, the road to Port Gibson
divides, taking two ridges which do not diverge more than a mile or two
at the widest point. These roads unite just outside the town. This
made it necessary for McClernand to divide his force. It was not only
divided, but it was separated by a deep ravine of the character above
described. One flank could not reinforce the other except by marching
back to the junction of the roads. McClernand put the divisions of
Hovey, Carr and A. J. Smith upon the right-hand branch and Osterhaus on
the left. I was on the field by ten A.M., and inspected both flanks in
person. On the right the enemy, if not being pressed back, was at least
not repulsing our advance. On the left, however, Osterhaus was not
faring so well. He had been repulsed with some loss. As soon as the
road could be cleared of McClernand's troops I ordered up McPherson, who
was close upon the rear of the 13th corps, with two brigades of Logan's
division. This was about noon. I ordered him to send one brigade
(General John E. Smith's was selected) to support Osterhaus, and to move
to the left and flank the enemy out of his position. This movement
carried the brigade over a deep ravine to a third ridge and, when
Smith's troops were seen well through the ravine, Osterhaus was directed