NPS-CWS&SS shows similar info:
46th Regiment, Wisconsin Infantry
Organized at Madison, Wis., and mustered in March 2, 1865. Moved to Louisville, Ky., March 5-10, thence to Athens, Ala., April 22-24. Attached to 2nd Brigade, 1st Sub-District, District of Middle Tennessee, Dept. of the Cumberland.
SERVICE.-Duty along line of the Nashville & Decatur Railroad till September. Mustered out September 27, 1865.
Lost during service 20 by disease.