根据短文，回答题：
Gettysburg saw the highest numberof casualties of any battle in the Civil War，but the lesser-known Battle ofChickamauga followed close behind．The Army ofthe Cumberland met the Confe derate Army of Tennessee atWest Chickamauga Line Creek in Georgia．The Union goalhad been to capture Chattanooga，Tennessee，(5)which it had essentially done by the time of the battle．The Confederate goal wasto protect the city and prevent the Unionarmy from proceeding further south．In three days ofsustained fighting，the Union Army lost 16，000 ffoops and the Confederate Army lost 18，000．The Confederates claimed a win，as theyforced the Union troops back northward．but since tlleUnion Army retained its positions in(10)Tennessee，Chickamaugawas essentially a draw．Consider each of the choicesseparately and select all that apply．
Which of these facts about Chickamauga bestsupport the author’s suggestion that the battle was nota Confederate victory?