War Department, returned Union Colors.
"Flag--2nd Brigade, 3rd Division, 20th Corps, Chickamauga Sep 19th, 1863".
That Union brigade was Lytle's of Sheridan's division.
The 88th Illinois, 36th Illinois, 24th Wisconsin and 21st Michigan. One of them lost a flag at Chickamauga.
Also the 21st Wisconsin, lost both of their flags, Regimental and National. Both flags were captured by the 21st Mississippi. Humphrey's reported his brigade captured 4-5 flags.