The 20th Maine Infantry Regiment was a volunteer regiment of the United States Army during the American Civil War (1861–1865), most famous for its defense of Little Round Top at the Battle of Gettysburg in Gettysburg, Pennsylvania, July 1–3, 1863. The 133rd Engineer Battalion of the Maine Army National Guard and the United States Army today carries on the lineage and traditions of the 20th Maine.
The 2nd Ohio Infantry Regiment was an infantry regiment in the Union Army during the American Civil War.
The 8th Minnesota Infantry Regiment was an infantry regiment that served in the Union Army during the American Indian Wars and the American Civil War.
The 8th Wisconsin Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War. The 8th Wisconsin's mascot was Old Abe, a bald eagle that accompanied the regiment into battle.
The 32nd Wisconsin Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.
The 19th Iowa Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.
The 40th New York Infantry Regiment, also known as the "Mozart Regiment" or the "Constitution Guard", was an infantry regiment that served in the Union Army during the American Civil War.
The 10th Alabama Infantry Regiment was an infantry regiment that served in the Confederate Army during the American Civil War.
The 11th Alabama Infantry Regiment was an infantry regiment that served in the Confederate Army during the American Civil War.
The 9th Alabama Infantry Regiment was an infantry regiment that served in the Confederate Army during the American Civil War.
The 14th Alabama Infantry Regiment was an infantry regiment that served in the Confederate Army during the American Civil War.
The 18th Alabama Infantry Regiment was an infantry regiment that served in the Confederate Army during the American Civil War.
The 36th Alabama Infantry Regiment was an infantry regiment that served in the Confederate Army during the American Civil War.
The 38th Alabama Infantry Regiment was an infantry regiment that served in the Confederate Army during the American Civil War.
The 3rd Ohio Infantry Regiment was an infantry regiment in the Union Army during the American Civil War. It served in several important campaigns in the Western Theater in Kentucky, Tennessee, and Alabama.
The 6th Kentucky Infantry Regiment was an infantry regiment that served in the Confederate States Army during the American Civil War. It was formed from Nelson, Barren, and surrounding counties. It was also part of the First Kentucky Brigade.
The 7th Arkansas Volunteer Infantry (1861−1865) was a Confederate Army infantry regiment during the American Civil War. Organized mainly from companies, including several prewar volunteer militia companies, raised in northeastern Arkansas, the regiment was among the first transferred to Confederate service, and spent virtually the entire war serving east of the Mississippi River. After the unit sustained heavy casualties in the Battle of Shiloh and the Kentucky Campaign, the unit spent most of the rest of the war field consolidated with the 6th Arkansas Infantry Regiment to form the 6th/7th Arkansas Infantry Regiment.
Also known as Law’s Brigade, the Alabama Brigade was a military formation of the Confederate States Army during the American Civil War. It was created in 1863 and participated in major combat operations such as the Battle of Gettysburg, the Battle of Chickamauga, the Battle of the Wilderness and the Richmond-Petersburg Campaign. It was considered one of the great fighting brigades of the Army of Northern Virginia.
The 3rd Alabama Infantry Regiment was an infantry regiment that served in the Confederate Army during the American Civil War. The 3rd Alabama consisted mainly of men from the Alabama counties of Autauga, Coosa, Lowndes, Macon, Mobile and Montgomery.
The 44th United States Colored Infantry was an infantry regiment that served in the Union Army during the American Civil War. The regiment was composed of African American enlisted men commanded by white officers and was authorized by the Bureau of Colored Troops which was created by the United States War Department on May 22, 1863.
Confederate States of America 
Confederate States Army 
