From June to December 1864, the 4th Regiment participated in the Richmond-Petersburg Campaign. At Petersburg, the unit was involved in the Second Battle of Petersburg from June 15 to June 18 and the Battle of the Crater on July 30. Later, the 4th moved towards Richmond and took part in an engagement at Dutch Gap on September 7, the Battle of Chaffin's Farm from September 28 to September 30, and the Battle of Fair Oaks on October 27 and October 28. Three men of the regiment received the Medal of Honor for their actions at Chaffin's Farm: Christian Fleetwood, Alfred B. Hilton, and Charles Veale.