List of Illinois units in the American Civil War

== Infantry units == In recognition of Illinois’ six regiments' service in the Mexican War, regimental numbers for infantry in the Civil War began at seven. == Cavalry units == Named Units == Mounted infantry units == == Artillery units == Named Units == See also == Lists of American Civil War Regiments by State == References == Plan for Organization of Volunteer Forces Report of the Adjutant General of the State of Illinois.

Source: Wikipedia — List of Illinois units in the American Civil War (CC BY-SA 4.0)