https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/12851780Edit ImageSaveSaveEditCropCustom TextGroup at Headquarters of the Army of the Potomac, Antietam, October 1862View public domain image source hereMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 938 px | 300 dpiLarge JPEG 3500 x 2735 px | 300 dpiBest Quality JPEG 3896 x 3044 px | 300 dpiFree DownloadGroup at Headquarters of the Army of the Potomac, Antietam, October 1862More