He went himself.
Sheridan before starting to sweep down to Petersburg had sent Merritt with his cavalry to the west to attack some Confederate cavalry that had assembled there.

Merritt drove them north to the Appomattox River.
Sheridan then took the enemy at Sutherland Station on the reverse side from where Miles was, and the two together captured the place, with a large number of prisoners and some pieces of artillery, and put the remainder, portions of three Confederate corps, to flight.

Sheridan followed, and drove them until night, when further pursuit was stopped.
Miles bivouacked for the night on the ground which he with Sheridan had carried so handsomely by assault.

I cannot explain the situation here better than by giving my dispatch to City Point that evening: BOYDTON ROAD, NEAR PETERSBURG, April 2, 1865 .-- 4.40 P.M.
COLONEL T.S.BOWERS, City Point.
We are now up and have a continuous line of troops, and in a few hours will be intrenched from the Appomattox below Petersburg to the river above.

Heth's and Wilcox's divisions, such part of them as were not captured, were cut off from town, either designedly on their part or because they could not help it.