Im not going back and forth on this anymore its taking up way to much of my time. However feel free to check the Tareton University web sight where I snagged this.
On the division level, a Confederate division could be larger than its' Union counterpart.
The reason for this was a better organizational development on the part of the Confederates who would fill existing regiments with new recruits rather than creating new ones as the Union frequently did when attrition occurred. In the Confederate armies major generals commanded divisions, for the most part. In the Union armies a brigadier general could command a division.
Thats from people who have allot more time to stare are rosters then I do, feel free to argue with them.
By August of 1861, Illinois had enrolled men in the 7th through 55th Infantry Regiments. Some men had difficulting getting into Illinois Regiments and joined Regiments from other states. By the end of August 1862, Regiment Numbers through 116 had been or were forming. Just one month later, the number was up to the 129th.
By late November 1862, after the harvest season, Illinois had 125 Infantry Regiments, 16 Cavalry, and 30 Artillery batteries. The total was 20,000 men in excess of the Union's requested quota for the State of Illinois
http://www.illinoiscivilwar.org/units_num.html
Part of the reason my numbers were off in the last post when I double checked the regiments formed out of order so it through me off.
Also from what I could find, and its not easy, one regiment of 1000 men recived 157 replacements during its 3 year enlistment.
And lets not forget how the Iron brigade got smaller and smaller and smaller as time went on.
Confederate regiments strenghts fluctuated allot, from what I coud find, but from the regiments that I could find they went through about 1500 or more replacments to there 1k men
And all this from me saying that the union should not get as many camps as the south, and you know what Im right.