I am currently going through the captured Illinois flags. Several years ago I worked with John Schmale and his Illinois website is excellent. He would know one half of the story and I would know the other half. Reading on every single Illinois regiment he has listed from the 7th to the 156th. I have found that he admits to (17) Illinois regiments losing a flag or flags on his site. There are many that I know were captured not listed on his site, so I will put everything together and see how many I have total. I am going to do a state-to-state search. I first did Pennsylvania, recorded as many as I could find and now moving on to Illinois.
Now these Illinois regiments either were three month, 100 days or did not seeing any fighting.
67-68-69-70-71 (3 month regiments in emergency for protection on/at Washington City) No flags lost/captured. All Illinois regiments from the 132nd-156 were mostly 100 day regiments a few were one year regiments. Doubtful any of those regiments lost flags considering many were not issued flags.
Have a good morning!
Shawn Prouty