This is the battle of Tunnel Hill, Missionary ridge.
MG.Cleburne's division with help from other regiments captured 8 Union flags. Only 2 are mentioned in Cleburne's OR report.

The 27th Pa and 93rd Illinois were mentioned captured. I have found evidence that the 5th Iowa lost a flag or even maybe both to Mill's Regiment (6/10/15 Texas Inf).

Cleburne said in his OR report that,

Mill's Texas regiment took 4 flags.
36th Ga-56th Ga (Cumming's Brigade) took 2 flags.
Govan's 2/15/24 Arkansas regiment took 1 flag.
The 1st Tennesee of Maney's brigade took 1 flag.

Total 8

The 5th Iowa was surprised when Mill's regiment attack through the tunnel, the tunnel is 980 feet long. The 5th Iowa was just a strong skirmish line protecting the right flank.

The 73rd Pa went into battle with 300 men and lost 275. Only 25 men made it out. The regiment was mostly captured. Capt. Kennedy of the 73rd Pa ripped off the flag and hid it even while at Libby Prison. ( I do believe the other 73rd Pa flag was captured). Just no proof.

After reading the book "Storming the Heights" by Matt Spruill, pages 188-220 was a big help. Its all the OR reports from both sides. There is no mention of the other 6 Union flags captured.

Regiment's I have an eye out for that might have lost a flag and or have no info on: 12th Indiana, 100th Indiana, 26th Ill, 90th Ill, 17th Iowa, 24th Missouri, 4th West Va, 30th Ohio, 37th Ohio, 46th Ohio, 40th Ill, 103rd Ill, 6th Iowa and the 15th Michigan.

Union Brigade's that attack MG.Cleburne's position:

Bushbecks's Briagade:
27th Pa---yes
73rd Pa---1 flag saved, the other...?
33rd nj---no
134th ny--no
154th ny--no

Raum/Weaver's Brigade:
56th Ill-------no
17th Iowa-------?
10th Missouri--no
24th Missouri---?
80th Ohio--close but not captured.

Matthies/Dean's Brigade
93rd Ill--yes
5th Iowa--yes 248 lost 106 many captured
10th Iowa--? 250/52 loss
26th Missouri--? 53 loss (15k, 34w, 4m)

Corse/Walcutt's Brigade
46th Ohio--?
40th Ill--?
103rd Ill--?
6th Iowa--?
15th Michigan--?

Loomis's brigade
26th Ill--? 101 loss
90th Ill--? 100 loss
12th Ind--?
100th Ind-? 1/4th loss

Lightburn's Brigade
4th Wva---?
30th Ohio-?
37th Ohio-?
Rest of the Brigade remained on opposite hill.

Well I will check every regimental book on these units, the OR's dont mention anything on the Union flags captured.

Shawn