Browsing the past records of the Minnesota board, I found this entry dated 4/9/2007:

MEMPHIS DAILY APPEAL, [MEMPHIS, TN], April 12, 1862, p. 1, c. 2

A Trophy.�The 9th Tennessee are in possession of the Minnesota battery** flag, captured by them on Sunday last [5th]. The regiment fought so gallantly as to draw from Gen. Cheatham the highest encomiums.

** Believe the 1st Minnesota Light Artillery Battery

From Military Annals of Tennessee, Confederate, John Berrien Lindsley, Vol. 1, p. 272, Ninth Tennessee Infantry

at Shilo

"J. W. Meux of Company C, captured a hahdsome battle Flag . . . . . . . The part under Col. Hart captured a section of artillery in their first action, and during the day several stands of colors were taken."