CHAPTER XXVI.

HALLECK ASSUMES COMMAND IN THE FIELD--THE ADVANCE UPON CORINTH
--OCCUPATION OF CORINTH--THE ARMY SEPARATED.

General Halleck arrived at Pittsburg landing on the 11th of April and
immediately assumed command in the field. On the 21st General Pope
arrived with an army 30,000 strong, fresh from the capture of Island
Number Ten in the Mississippi River. He went into camp at Hamburg
landing five miles above Pittsburg. Halleck had now three armies: the
Army of the Ohio, Buell commanding; the Army of the Mississippi, Pope
commanding; and the Army of the Tennessee. His orders divided the
combined force into the right wing, reserve, centre and left wing.
Major-General George H. Thomas, who had been in Buell's army, was
transferred with his division to the Army of the Tennessee and given
command of the right wing, composed of all of that army except
McClernand's and Lew. Wallace's divisions. McClernand was assigned to
the command of the reserve, composed of his own and Lew. Wallace's
divisions. Buell commanded the centre, the Army of the Ohio; and Pope
the left wing, the Army of the Mississippi. I was named second in
command of the whole, and was also supposed to be in command of the
right wing and reserve.

Orders were given to all the commanders engaged at Shiloh to send in
their reports without delay to department headquarters. Those from
officers of the Army of the Tennessee were sent through me; but from the
Army of the Ohio they were sent by General Buell without passing through
my hands. General Halleck ordered me, verbally, to send in my report,
but I positively declined on the ground that he had received the reports