Thank you for the information on the flag.
About "Casualties", I spent Seven long years back in the 1990's working on the missing Union and Confederate regimental strength's and losses. When General Lee took command on June 1st, 1862, he counted his "Sick" and "Slightly wounded" in his after battle reports. General Order #63 (May 14th, 1863) stopped the practice of counting "Sick" and "Slightly wounded" soldiers. Thus, Lee's losses from June 1st, 1862-May 14th 1863, can not be accepted as a whole. The problem I found was how many of those "Slightly wounded" men RTD (Returned to Duty)?
So I looked at the generals for an example. General Ewell was shot in the knee at 2nd Bull Run and thus missed all major battles till 2nd Winchester. General Ed Johnson was shot in the ankle at the battle of McDowell in May 1862 and he was out of service for a year. Then at Gettysburg on July 1st, MG. Heth was hit in the head by a spent bullet. Heth was knocked out cold for 24 hours. But he was able to return to duty within that week.
So imagine thousands of soldiers going through that. On the regimental level, I have always found more "Wounded recovered" then "Wounded". But the question is, how many and when did those "Wounded recovered" returned to duty???
On the Union side of it, it was just in reverse. At the battle of Fredericksburg, Lincoln ordered MG. Burnside to "Tone Down" the loss. Look what was coming on on January 1st, 1863. All books, the OR etc will list "12,500". But I dug deep at the National Archives and I believe it was more around "15,000".
At the battle of the Wilderness, MG. Warren admitted he took some of his casualties off his battle report. How many??? MG. Hancock ordered his division and brigade commanders not to fill out any reports from May 1864 till February 1865.
No other Army, North or South took their "Sick" and "Slightly Wounded" off of their after battle reports, as Lee finally did. So I am not convinced of "50,000" loss at Gettysburg or "23,000" at Shiloh or Antietam.
But please do not get into the "Numbers Game". It was a miserable Seven years working on that. No two historians ever agreed on strengths or losses. Generally, they are all in the "Ball Park" but we will never know exactly how many.
I still try to find the missing Union and Confederate strengths and losses from John Michael Priest's book "Antietam" the Soldier's Battle, pages 318-343. Also the battle of Chickamauga is missing many Confederate regiments, even General Longstreet's losses are unknown and only a few of his regiments strengths and losses are known.
I don't just work on the Union captured flags, but captured artillery, soldiers (Company level and up). Anything captured practically.
Have a good day!
Shawn Prouty