Union General Joseph Hooker graduated from West Point in 1837. He ranked 29th in his graduating class of 50 cadets. Hooker became a well known general and reached his peak when Lincoln appointed him to command the Army of the Potomac. Sadly for him, he lost the key Battle of Chancellorsville in May of 1863. He was replaced as the commander of the Army of the Potomac by General George Meade.
West point graduate George G. Meade fought at the Battle of Antietam. He was a brigadier general under the command of Corps commander Joseph Hooker. Meade led the Third Division of Hooker's First Corps.
General in Chief Henry W. Halleck was deeply involved in Union operations in Virginia in 1863. As the Summer approached, Halleck believed that Union General Joseph Hooker, commanding the Army of the Potomac would have to react to General Robert E. Lee's actions in northern Virginia. He believed that it was possible for Lee to pin Hooker back into defending Washington DC, and at the same time conduct a raid into Maryland and Pennsylvania. Halleck assured Hooker that if needed he would reinforce Hooker with troops from the Shenandoah Valley and from West Point.
Union General Joseph Haydn Potter graduated from West Point in 1843. Among the 39 graduating cadets that year, Potter was ranked 22nd. Potter saw his battle action in the Eastern Theater. He participated in the Peninsula campaign and Chancellorsville. He was taken prisoner two times and was exchanged for other enemy soldiers.
Union General Benjamin Butler did not graduate from West Point. He did have a college education and graduated from Colby College in Maine. He also passed the bar in Massachusetts and practiced law before the US Civil War.
The Union Army was there. Hooker was the Union Commander so this answer makes no sense. In the Spring of 1863, after the horrible slaughter of Union troops at Fredricksburg on Dec. 13, 1862, Lincoln sacked yet another General of the Army of the Potomac(Ambrose Burnside). He appointed General Joseph Hooker. Hooker,wanting to bring ultimate victory for the North saw his chance to trap Lee's Army of Northern Virginia against the Rappahannock River. Hooker's main force was still opposite of part of Lee's Army at Fredricksburg(on the opposite side of the river. Hooker devised what he thought to be a masterful plan,leaving part of his force in easy view of the Confederates and moving the bulk of his army along the bank of the river to a point where,after crossing ,he would emerge "behind" Lee's Army with Lee's back against the river. His movement was discovered by Confederate cavalry and reported to General Lee,who moved quickly to confront Hooker as he emerged from the dense forest(The Wilderness). To abbreviate this answer I will just say that after 4 days of fighting Hooker retreated back to the north side of the river. Because of specific bold actions taken by Lee,this victory is considered by most to be his greatest battle victory.
West point graduate George G. Meade fought at the Battle of Antietam. He was a brigadier general under the command of Corps commander Joseph Hooker. Meade led the Third Division of Hooker's First Corps.
Union General Darius Nash Couch graduated from West Point in 1846. This was the same class as General McClellan. Couch ranked 13th in a graduating class of 59 cadets. He served admirable at the Battle of Chancellorsville. For a time, he replaced his superior, Joseph Hooker who was injured in the battle.
Union General Joseph Mansfield graduated from West Point in 1822. Among his class of graduating cadets of forty he ranked second.Mansfield took part in the Battle of Antietam, where he was mortally wounded.
Union General Joseph Bennett Plumber graduated from West point in 1841. He ranked 22nd in a graduating class of 52 cadets. Plumber served in the West under General Pope. After being wounded, he died of an infection in 1862.
Confederate General William Joseph Hardee graduated from West Point in 1838. Hardee ranked 26th in his graduating class of 45 cadets. Most of his action in the US Civil War was in the Western Theater.
Union General Joseph Abel Haskin graduated from West Point in 1839. Among the 31 cadets graduating in his class of 31, Haskin ranked tenth. For most of the war, Haskin was assigned to the defense structure surrounding Washington DC.
Union General John Joseph Abercrombie graduated from West Point in 1822. He was ranked 37th in his graduating class that numbered 40 cadets. Abercrombie saw action in the Eastern Theater. He served in two major campaigns, that being the Peninsula and Overland campaigns.
Confederate General Edmund Kirby Smith was a graduate of West Point's class of 1845. He ranked 26th in his class.
He graduated from West Point Military Academy
General in Chief Henry W. Halleck was deeply involved in Union operations in Virginia in 1863. As the Summer approached, Halleck believed that Union General Joseph Hooker, commanding the Army of the Potomac would have to react to General Robert E. Lee's actions in northern Virginia. He believed that it was possible for Lee to pin Hooker back into defending Washington DC, and at the same time conduct a raid into Maryland and Pennsylvania. Halleck assured Hooker that if needed he would reinforce Hooker with troops from the Shenandoah Valley and from West Point.
Union General Joseph Haydn Potter graduated from West Point in 1843. Among the 39 graduating cadets that year, Potter was ranked 22nd. Potter saw his battle action in the Eastern Theater. He participated in the Peninsula campaign and Chancellorsville. He was taken prisoner two times and was exchanged for other enemy soldiers.
According to An Adjutant General Remembers: a Military Memoir by Major General Kenneth Wickham, he graduated from West Point on 12 June 1938.