It is very rare that a Union regimental commander admitted to losing a color. So I have to go off of Confederate reports and then figure out what Union regiments fought against that Confederate regiment. We will then get all of those Union regiments in that entire area and find out any information on that regiment.
I do wish, all Union and Confederate regiments had a regimental history more in detail. Most are basic descriptions and battles they were in.
We will find that fourth flag!
Have a good day,
Shawn Prouty