Rubuta ci gaba don wannan sakin layi - Sake shiga tare da abokan gaba a rana mai zuwa (Agusta 30), 48th Pennsylvanians sun sami gwagwarmaya mai tsanani a lokacin yakin Chantilly
(Satumba 1), a lokacin da aka sake sanya 48th Pennsylvania a hannun dama na Union Army. An umurce shi zuwa Alexandria bayan kammalawar yakin, an sake sanya rundunar zuwa Maryland Campaign (Satumba 4<unk>20). Bayan ya sake fada a kusa da Fox's Pass a yakin Kudancin Mountain (Satumba 14), Monaghan da 48th Pennsylvania sun ci gaba ta hanyar tashin hankali na Antietam (Satumba 17). Bayan da suka shiga abokan gaba a wannan safiya a Burnside's Bridge, sai suka jagoranci Brigade na 1 a bin bin bindigogi na CSA ta hanyar Sharpsburg da kuma kewaye da shi yayin da suke karkashin manyan bindigogi da bindigogi. Ci gaba da tafiya da kuma rikici lokaci-lokaci tare da abokan gaba da suka fadi, sai suka sake yin yaki a yakin Fredericksburg (Disamba 11<unk>15).