o remain until relieved by McPherson's advance,
which happened late that evening, May 18th. The battalion of the
Thirteenth United States Regulars, commanded by Captain Washington,
was at the head of the column on the right-hand road, and pushed the
rebels close behind their parapets; one of my staff, Captain
Pitzman, receiving a dangerous wound in the hip, which apparently
disabled him for life. By night Blair's whole division had closed up
against the defenses of Vicksburg, which were found to be strong and
well manned; and, on General Steele's head of column arriving, I
turned it still more to the right, with orders to work its way down
the bluff, so as to make connection with our fleet in the
Mississippi River. There was a good deal of desultory fighting that
evening, and a man was killed by the aide of General Grant and
myself, as we sat by the road-side looking at Steele's division
passing to the right. General Steele's men reached the road which
led from Vicksburg up to Haines's Bluff, which road lay at the foot
of the hills, and intercepted some prisoners and wagons which were
coming down from Haines's Bluff.

All that night McPherson's troops were arriving by the main Jackson
road, and McClernand'a by another near the railroad, deploying
forward as fast as they struck the rebel works. My corps (the
Fifteenth) had the right of the line of investment; McPherson's
(the Seventeenth) the centre; and McClernand's (the Thirteenth) the
left, reaching from the river above to the railroad below. Our
lines connected, and invested about three-quarters of the
land-front of the fortifications of Vicksburg. On the supposition
that the garrison of Vicksburg was demoralized by the defeats at
Champion Hills and at the railroad crossing of the Big Black,
General Grant ordered an assault at our respective fronts on the
19th. My troops reached the top of the parapet, but could not
cross over. The rebel parapets were strongly manned, and the enemy
fought hard and well. My loss was pretty heavy, falling chiefly on
the Thirteenth Regulars, whose commanding officer, Captain
Washington, was killed, and several other regiments were pretty
badly cut up. We, however, held the ground up to the ditch till
night, and then drew back only a short distance, and began to
counter-trench. On the graveyard road, our parapet was within less
than fifty yards of the rebel ditch.

On the 20th of May, General Grant called the three corps co