untains, his first requisitions for wagons and mules were a little
startling to the Quartermaster-General and a little surprising to
himself. He began at once an engineering reconnoissance of the
country south of Lexington and Danville, as far as it was within our
control, and employed an able civil engineer, Mr. Gunn, to locate
the preliminary line for a railway. [Footnote: _Id_., vol. xxiii.
pt. ii. p. 610.] These surveys were the starting-points from which
the actual construction of the road between Cincinnati and
Chattanooga was made after the close of the war.

Burnside also urged that the troops in Kentucky, exclusive of the
Ninth Corps, be organized into a new corps with General Hartsuff as
its commander. [Footnote: _Id_., p. 259.] Halleck demurred to this,
but the President directed it to be done, and the order was issued
by the War Department on 27th April. [Footnote: _Id_., pp. 269, 283,
400.] Burnside also applied himself earnestly to procuring from
Rosecrans a plan of active co-operation for an advance. As soon as
Hartsuff assumed command of the new Twenty-third Corps, Burnside
sent him, on May 3d, to visit Rosecrans in person, giving him
authority to arrange an aggressive campaign. [Footnote: _Id_., p.
312.] Hartsuff's old relations to Rosecrans made him a very fit
person for the negotiation. Rosecrans hesitated to decide, and
called a council of his principal officers. He suggested that the
Ninth Corps be sent down the Louisville and Nashville Railroad to
Glasgow, near the Tennessee line, but did not indicate any immediate
purpose of advancing. [Footnote: Official Records, vol. xxiii. pt.
ii. pp. 313, 315.] Burnside meant to take the field with both corps
of his command, which he had organized under the name of the Army of
the Ohio; but to reassure Rosecrans, he wrote that if in
co-operation the two armies should come together, he would waive his
elder rank and serve under Rosecrans whilst he should remain in
middle Tennessee. [Footnote: _Id_., p. 331.] It was now the 15th of
May, and he sent a confidential staff officer again to Rosecrans to
try to settle a common plan of operations. On the 18th Halleck had
heard of Bragg's army being weakened to give General Joseph E.
Johnston a force with which to relieve Pemberton at Vicksburg, and
he became urgent for both Rosecrans and Burnside to advance.
[Footnote: _Id_., p. 337.] He thought it probable that raids would
be attempted by the enemy to distract attent