121st Infantry - the "Old Gray Bonnet" Regiment of the Georgia National Guard - was assigned to 8th Infantry Division in 1941 and remained so throughout the war. There is no official 8th Infantry Division Association but there is a regimental veterans association:
121st Infantry Association Leonard C. Grace P.O.Box 5500 Macon Georgia 31208-5500 (912) 477-3643
Perhaps they can put you in touch with someone who remembers your Uncle Eulice.
If you'd like to order his deceased file you'll find practical instructions at Message #2112 (go back to the Main Page, enter "2112" in the box in the upper right corner marked "Jump to #_____" then click on "Go").