Iovvans to Join in Anniversary of Civil War Battle KEOKUK (AP) - Historians say the northernmost battle of the Civil War was fought 30 miles west of Keokuk at Athens, Mo., just across the Des Moines River from Croton, Iowa. Cannonballs fell in Croton. Croton residents will join in celebrating the 114th anniversary of the battle this weekend at Athens. There were many confederate sympathizers in Missouri during the Civil War, and slaves were owned just across the state line from Keokuk. On Aug. 5, 1861, an alarm was sounded in Keokuk. Rebel sympathizers were advancing on Croton to cut the Des Moines Valley Railroad at that point. Col. David Moore of Keokuk immediately organized a group of Union soldiers, along with Keokuk's home guard and citizen volunteers. They advanced and stopped the rebels at Athens after fierce skirmishing. Col. Moore's son was said to be fighting with the Rebel sympathizers. When he heard his father was in charge of Union forces, he reportedly told Col. Martin Green, commander of Rebel troops: "It's time to skedaddle. The old man will show no quarter." A Missouri state park is now located at Athens. Some of the old buildings remain, including one punctured by a cannonball.