You are correct, Loomis's brigade did not lose a flag. I had a family member in Loomis's brigade (100th Indiana) and another Prouty fought in the 25th Texas Cav (Dismounted). I've been tracking down my family members that fought in the Civil War.
I have found that the state adjutant books at the Library of Congress are more helpful then the Soldiers/Sailor's website.

I'm just trying to figure out when they were wounded, killed, pow, discharged, sick etc.

Thank you for all the help on Loomis's brigade!

Shawn