The Battle of Antietam, or Battle of Sharpsburg particularly in the Southern United States, was a battle of the American Civil War fought on September 17, 1862, between Confederate Gen. Robert E. Lee's Army of Northern Virginia and Union Gen. George B. McClellan's Army of the Potomac near Sharpsburg, Maryland, and Antietam Creek. Part of the Maryland Campaign, it was the first field army–level engagement in the Eastern Theater of the American Civil War to take place on Union soil. It remains the bloodiest day in American history, with a tally of 22,727 dead, wounded, or missing on both sides. Although the Union Army suffered heavier casualties than the Confederates, the battle was a major turning point in the Union's favor.
Cadmus Marcellus Wilcox was a career United States Army officer who served in the Mexican–American War and also was a Confederate general during the American Civil War.
The 14th Indiana Infantry Regiment, later referred to as the Gallant Fourteenth, was an infantry regiment and part of the Union Army's celebrated "Gibraltar Brigade" of the Army of the Potomac during the American Civil War. Organized in May 1861 at Camp Vigo, near Terre Haute, Indiana, it was the state's first regiment organized for three years of service. The 14th Indiana served in major campaigns and battles in the Eastern Theater, mostly in West Virginia, Virginia, Pennsylvania, and Maryland. During its three years of service, the regiment had a total of 222 casualties.
George Pierce Doles was an American businessman and Confederate general during the American Civil War. His men played a key role on the first day of the Battle of Gettysburg in driving back the Union XI Corps.
The 3rd Wisconsin Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.
George Leonard Andrews was an American professor, civil engineer, and soldier. He was a brigadier general in the Union Army during the American Civil War and was awarded the honorary grade of brevet major general.
Walter P. Phelps Jr. was an officer in the Union Army throughout the American Civil War, serving as commanding officer of the Eastern Iron Brigade.
Ezra Ayers Carman was an officer in the Union Army during the American Civil War, commanding a New Jersey infantry regiment and (occasionally) a brigade.
The 5th Arkansas Infantry, also called the Fighting Fifth (1861–1865) was a Confederate Army infantry regiment organized in Arkansas to serve for the Confederate States of America during the American Civil War. It served throughout the war in the western theater, seeing action in the Kentucky, Tennessee and Georgia campaigns. Following its depletion in numbers the regiment was consolidated several times with other Arkansas regiments, finally merging in 1865 into the 1st Arkansas Consolidated Infantry Regiment. Another Arkansas unit also had the designation 5th Arkansas, the 5th Regiment, Arkansas State Troops which participated in the Battle of Wilson's Creek, but was never transferred to Confederate Service. There is no connection between the two units.
Henry J. Stainrook, occasionally spelled Steinrock, led a regiment of the Army of Virginia and the Army of the Potomac in the American Civil War. He briefly led a brigade at the Battle of Antietam. Stainrook was killed in the Battle of Chancellorsville.
William Edwin Starke was a wealthy Gulf Coast businessman and a brigadier general in the Confederate States Army during the American Civil War. He was killed in action at the Battle of Antietam while commanding the famed "Stonewall Division," a unit first made famous under Stonewall Jackson.
The 5th Ohio Infantry Regiment was an infantry regiment from southwestern Ohio that served in the Union Army during the American Civil War, serving in both the Eastern and Western Theaters in a series of campaigns and battles. It was noted for its holding the high ground at the center of the line at Antietam as part of Tyndale's 1st Brigade, Greene's 2nd Division of Mansfield's XII Corps.
The Thirteenth Pennsylvania Reserve Regiment, also known as the 42nd Pennsylvania Volunteer Infantry, the 1st Pennsylvania Rifles, Kane's Rifles, or simply the "Bucktails," was a volunteer infantry regiment that served in the Union Army during the American Civil War. It was a part of the famed Pennsylvania Reserve division in the Army of the Potomac for much of the early and middle parts of the war, and served in the Eastern Theater in a number of important battles, including Antietam, Fredericksburg, and Gettysburg.
Hispanics in the American Civil War fought on both the Union and Confederate sides of the conflict. Not all the Hispanics who fought in the American Civil War were "Hispanic Americans" — in other words citizens of the United States. Many of them were Spanish subjects or nationals from countries in the Caribbean, Central and South America. Some were born in what later became a U.S. territory and therefore did not have the right to U.S. citizenship. It is estimated that approximately 3,500 Hispanics, mostly Mexican-Americans, Puerto Ricans and Cubans living in the United States joined the war: 2,500 for the Confederacy and 1,000 for the Union. This number increased to 10,000 by the end of the war.
The 2nd Regiment Massachusetts Volunteer Infantry was an infantry regiment in the Union Army during the American Civil War. Major George H. Gordon, a West Point graduate and veteran of the Mexican–American War, organized the unit's recruitment and formation. The 2nd Massachusetts was trained at Camp Andrew in West Roxbury, Massachusetts on the site of the former Transcendentalist utopian community, Brook Farm. Roughly half the regiment was mustered in on May 18, 1861 and the remainder on May 25, 1861 for a term of three years. The regiment saw extensive combat as part of the Army of the Potomac particularly during the Battle of Antietam and the Battle of Gettysburg.
The 13th Arkansas 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 in Confederate forces east of the Mississippi River. After the unit sustained heavy casualties during the Battle of Murfreesboro, the unit spent most of the rest of the war field consolidated with the 13th Arkansas Infantry Regiment, to form the 5th/13th Arkansas Infantry Regiment.
The 15th Arkansas Infantry Regiment or Josey's Arkansas Infantry Regiment was an infantry formation in the Confederate States Army during the American Civil War. The regiment was organized in May 1861 under the command of Colonel Patrick Cleburne. It served throughout the war in the western theater, seeing action in the Kentucky, Tennessee, and Georgia campaigns. Following its depletion in numbers the regiment was consolidated several times with other Arkansas regiments, finally merging in 1865 into the 1st Arkansas Consolidated Infantry Regiment. There were two other regiments which also received the designation of "15th Arkansas". The 21st (McRae's) Arkansas Infantry was redesignated 15th Arkansas in February 1863, but to avoid confusion, was normally referred to as the 15th (Northwest) Arkansas Infantry Regiment. This second "15th Arkansas" was surrendered at Vicksburg in July 1863. A third regiment, under command of Colonels Gee and later Johnson, also received the designation 15th Arkansas Infantry. This last regiment surrendered at Port Hudson, Louisiana, in July 1863.
Charles Constantine Crews was an attorney, physician, railroad executive and Confederate Colonel in the American Civil War. Between 1862 and 1865, he participated in most of the Western Theater cavalry campaigns of Major General Joseph Wheeler, initially leading the 2nd Georgia Cavalry and eventually a cavalry brigade.
The 7th Pennsylvania Reserve Regiment, also known as the 36th Regiment Pennsylvania Volunteer Infantry, was a regiment in the Union Army during the American Civil War. It formed part of the Pennsylvania Reserve division in the Army of the Potomac for most of the war. The regiment served in a number of important battles throughout the Eastern Theater, including Antietam and Fredericksburg.
The 15th Georgia Infantry Regiment was an infantry regiment in the Confederate States Army during the American Civil War. It participated in most of the key battles of Robert E. Lee's Army of Northern Virginia.
Confederate States of America 
Confederate States Army 
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