The 7th Illinois Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.
The 8th Illinois Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.
The 79th Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 100th Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 90th Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 30th Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 34th Regiment Illinois Volunteer Infantry, known as the "Rock River Rifles," was an infantry regiment that served in the Union Army during the American Civil War. The volunteers of this Regiment came from northwestern Illinois, the valley of the Rock River; thus they mainly came from Whiteside, Lee, Ogle, and Carroll counties, but some came further south from Christian, Morgan, Randolph, and Edgar counties.
The 10th Illinois Infantry Regiment was an infantry regiment that served in the Union Army between April 20, 1861, and July 11, 1865, during the American Civil War.
The 12th Illinois Infantry Regiment, also known as the 1st Scotch Regiment, was an infantry regiment that served in the Union Army between May 2, 1861 and July 18, 1865, during the American Civil War.
The 18th Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 24th Regiment Illinois Volunteer Infantry, also known as the 1st Hecker Jaeger Regiment, was an infantry regiment that served in the Union Army during the American Civil War. It was made up almost exclusively of German, Swiss, Hungarian, Czech and Slovak immigrants. It was the first unit mobilised for the war in Chicago, and was composed of many Forty-Eighters, veterans of the revolutions of 1848 in Germany and the Austrian Empire.
The 36th Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War. The unit was mustered into service in September 1861. The regiment fought at the battles of Pea Ridge, Perryville, Stones River, Chickamauga, Missionary Ridge, Resaca, Kennesaw Mountain, Atlanta, Franklin, and Nashville. It was mustered out in October 1865.
The 42nd Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War. It is one of the 300 fighting regiments.
The 59th Illinois Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War. It was formed as the 9th Missouri Infantry Regiment in September 1861, and changed name to the 59th Illinois Infantry Regiment in February 1862.
The 64th Regiment Illinois Volunteer Infantry, nicknamed "Yates' Sharpshooters" was an infantry regiment that served in the Union Army during the American Civil War.
The 65th Regiment Illinois Volunteer Infantry, nicknamed the "Second Scotch Regiment" was an infantry regiment that served in the Union Army during the American Civil War. The regiment mustered into service in May 1862 and was captured at the Battle of Harper's Ferry. After being paroled and exchanged, the regiment was sent to Kentucky and assigned to the XXIII Corps. The regiment participated in the Knoxville campaign, the Atlanta campaign, the Franklin–Nashville campaign, and the Carolinas campaign. The soldiers were mustered out in July 1865.
The 10th Kansas Infantry Regiment served in the Union Army between April 3, 1862, and September 20, 1865, during the American Civil War.
The 110th Illinois Volunteer Infantry was an infantry regiment in the Union Army during the American Civil War.
The 4th Maryland Volunteer Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.
The 100th Regiment Pennsylvania Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.
United States 
