Georgia in the Civil War in "Ambuscade" (Location)

According to Bayard, when he and Ringo eavesdrop on his father's conversation about the fighting he's been doing, they hear "the names - Chickamauga and Lookout Mountain" (5). There were major Civil War battles at these locations, the first in Georgia and the second in Tennessee, but they were fought in September and November 1863, respectively, at least two months after the events of the story (152). When Faulkner revised "Ambuscade" for publication in The Unvanquished, he removed this pair of references.