The 31st Regiment Illinois Volunteer Infantry, nicknamed the "Dirty-First," was an infantry regiment that served in the Union Army during the American Civil War.
- https://civilwar.illinoisgenweb.org/reg_html/031_reg.html
- https://en.wikipedia.org/wiki/31st_Illinois_Volunteer_Infantry_Regi...
- http://transmississippian.blogspot.com/2012/03/fighting-31st-illino...
- http://www.civilwarindex.com/armyil/rosters/31st_il_infantry_roster...
Roster
- Colonels
- Lt. Colonels
- Majors
- Adjutants
- Quartermaster
- Surgeons
- 1st Assistant Surgeons
- Chaplain
Non-Commissioned Staff
- Sergeant Majors
- Commissary Sergeants
- Quartermaster Sergeants
- Hospital Stewards
- Principle Musicians