 Complete the following phrase:  Despite being in existence for less than a month, and with bare rudimentary military training, it was thrown into a combat role at the September 17, 1862, Battle of Antietam. There it fought near the Dunkard Church and performed relatively well considering the units inexperience. Its further service would see the regiment take part in the Battles of Chancellorsville, Gettysburg, the Atlanta Campaign most notably at the 