It honors those killed in the Blackhawk War, including in the final Illinois Battle which occurred at this grove in June, 1832. Abraham Lincoln, a member of the Illinois militia, helped bury five of the slain men. The remaining soldiers were originally buried throughout the area at the spots at which they fell. Fifty years after the war, local farmers collected the remains and buried them in one enclosure on top of this hill overlooking the Yellow Creek Valley. The 34-foot high monument was dedicated in 1886.