At the start of the Civil War, Parke was appointed
brigadier general of volunteers and commanded a
brigade in the operations on the
North Carolina coast in early 1862. He received a
brevet promotion for the
Battle of Fort Macon and was promoted to
major general of volunteers on July 18, 1862. In the
Army of the Potomac, Parke served briefly as commander of 3rd Division,
IX Corps. Then he served as chief of staff to
Maj. Gen. Ambrose Burnside during the battles of
Antietam and
Fredericksburg. He assumed command of the IX Corps and was sent to the
Western Theater for the
Vicksburg Campaign. Parke then was Burnside's chief of staff in the
Army of the Ohio in the defense of
Knoxville. Parke served as chief of staff to Burnside during the
Overland Campaign, in which the latter commanded IX Corps, as well as in the beginning stages of the
Siege of Petersburg. After the
Battle of the Crater, Burnside was relieved of command and Parke assumed command of the IX Corps. He led it at the
Battle of Globe Tavern, the
Battle of Peebles' Farm, and the
Battle of Boydton Plank Road. In 1865, while
Army of the Potomac commander Maj. Gen.
George G. Meade was in a conference, Parke, being senior officer, was acting commander of the army during the
Battle of Fort Stedman until Meade returned to the field. He led the IX Corps through the
fall of Petersburg and the
Appomattox Campaign. In 1865 he was appointed brevet major general in the
regular army in recognition of his service at Fort Stedman. ==Postbellum career==