Although the Union report is placed at Ramer's Crossing, Miss., there can be no doubt based on his reference to Faulkner, 1st Mississippii PR who notes that Ramer's is North of Cornith, that it is located as noted some 13 miles North of Cornith.
See OR Atlas Plate 154 which places the site, most likely on either Turkey or Cyprus Creek, some 6 miles SW of Purdy, Tennessee.
George Martin