William Simmons was awarded the Medal of Honor for the capture of the 34th Alabama flag. This seems to be accurate and the regiment was active in the Battle of Nashville. Then things get confused. The regimental records for the 11th Missouri shows that George Welch captured a flag but does not identify which flag he captured. However, there are several references that this was the 13th Alabama. I couldn't find the 13th Alabama at Nashville and your comment confirm this. Finally, James Parks also received a Medal of Honor for the capture of another unidentified battle flag.
If anyone knows which flags George Welch and James Parks captured at the Battle of Nashville, please let me know.
Otherwise does any know which regiments the 11th Missouri Infantry faced on the afternoon on Dec.16?