; born in Columbus, O.
, Oct. 15, 1818.
Educated partly at a military school in France
, he graduated at West Point
in 1838, and was assistant instructor of tactics there in 1841.
He was adjutant of the post until 1845.
In 1846 he accompanied General Wool
as aide-de-camp, winning the brevet of captain at Buena Vista
In 1856 he became assistant adjutant-general, and brigadier-general United States army in May, 1861. General McDowell
had command of the first army gathered at Washington
, and commanded at the battle of Bull Run
took command of the Army of the Potomac, McDowell
led a division under him. In March, 1862, he took command of a corps, and was appointed major-general of volunteers.
In April his corps was detached from the Army of the Potomac, and he was placed in command of the Department of the Rappahannock.
He co-operated with the forces of Banks
in the Shenandoah Valley, and was of great assistance to General Pope
in the operations of the Army of Virginia.
He was relieved, at his own request, Sept. 5, 1862, and subsequently commanded the Department of the Pacific.
He received the brevet of
majorgeneral United States army in March, 1865.
In September, 1866, he was mustered out of the volunteer service, and afterwards commanded the Departments of the
East, the South
, and the Pacific
till his retirement, Oct. 15, 1882.
He died in San Francisco
, May 4, 1885.