アービン・マクドウェル
The I Corps was created on March 3, 1862, when President Abraham Lincoln ordered the creation of a five-corps army, then under the command of Major General George B. McClellan. The first commander of the corps was Major General Irvin McDowell. It contained three divisions under the commands of Brigadier Generals William B. Franklin, George A. McCall, and Rufus King.