. . "1862-09-14" . . . . . . . . . . . . . . . . . . "Crampton's Gap" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "United States (Union)" . . . . . . . . . . . . . . . . . "(443 killed, 1,807 wounded, 75 missing)" . . . . . . . . "South Mountain Battlefield" . . . . . . . . . . . . . . . . . . . "Frosttown Gap" . "18,000" . . "Battle of Boonsboro Gap" . "plan an offensive" . . "28,000" . . . . . . . . "Battle of Crampton's Gap" . "Crampton's, Fox's and Turner's Gaps" . . . "Battle of South Mountain" . . . . "battle of South Mountain" . . . . . "Battles of South Mountain" . . . . . . . . . . . . . . . . "South Mountain (September 14, 1862)" . . . . . . . . . . . . . . . . . . "Turner's and Crampton's Gap, South Mountain, Maryland" . "battlefield" . . "2,325 total" . . "Battle of Turner's Gap" . . . . . . . . . . "South Mountain" . . . . . . . "CSA (Confederacy)" . . . "Fox's Gap" . . "South Mountain State Battlefield" . . . . . . . . . "Battle of South Mountain" . . . . . . . "Unionvictory" . . . . . . . . . . . . . "Battle of Crampton\u2019s Gap" . . . . . . . .