What was the Corps and Division Organization of The Army of Virginia?

Answer 1

I'm guessing you mean the Army of Northern Virginia. The Confederacy was divided into geographic departments, with a general commanding both the department and any troops in the department. For the last three years of the war Robert E. Lee commanded the Department of Northern Virginia, and the sizable force within the Department, which he began styling the Army of Northern Virginia. His predecessor had called this force the Army of the Potomac, a name soon appropriated by the Yankees for the army opposing Lee. Lee's Department embraced Virginia north of the James River.

When Lee first took command of this Department, Confederate law did not provide for army corps or for lieutenant generals to command corps. The Confederate law allowed for brigadier and major generals, and for full, four star generals. Lee worked diligently to maintain close relations with the Confederate government and with Jefferson Davis, and was soon able to have these defects remedied. Until that time though, Lee had to use a cumbersome arrangement of "wings" as groupings of divisions.

When the law allowed Lee divided his army into two corps. The First Corps was the largest, and was under newly promoted Lieutenant General James Longstreet. The Second Corps was under Thomas Jonathan "Stonewall" Jackson. There were eight divisions in the army, but not all were of equal size. Some had more brigades than others. The Brigades were not all of equal size either. Lee did do his best to carry through a reorganization near and dear to the heart of Jefferson Davis, which was to brigade troops from the same state together. Lee's predecessor had refused to do this, excusing himself from this on the ground that doing so "in the presence of the enemy" would be dangerous. This had created much rancor and ill will between that officer and Davis.

From the late summer of 1862 the Army of Northern Virginia continued with this organization, until Jackson was mortally wounded at Chancellorsville. After Jackson's death Lee reorganized his army into three corps, each with three divisions. Longstreet continued in command of the First Corps, Richard S. Ewell (back from losing a leg at Second Manassas) took over the Second Corps, and A. P. Hill was promoted from divisional command to head the new Third Corps. This organization continued until the last few weeks of the war, when a Fourth Corps was created, commanded by Richard H. Anderson. Ewell proved unable to stand field command after Gettysburg, and was replaced by Jubal A. Early. Longstreet was badly wounded in the Wilderness, and out of action for months. Hill was killed a week before Appomattox.