Recently Updated Entries in the Encyclopedia

General Order No. 225 (U.S. War Department)
On July 7, 1864, the U.S. War Department issued General Order No. 225 reorganizing the 18th Army Corps and reaffirming William F. "Baldy" Smith as corps commander. Ten days later, Ulysses S. Grant sacked Smith for no stated reason. Continue Reading »
President Lincoln's Letter to Joseph Hooker
On January 26, 1863, President Lincoln wrote to Joseph Hooker, giving him advice about commanding the Army of the Potomac. Continue Reading »
Granger, Gordon
A career United States Army officer, Major General Gordon Granger held numerous commands and participated in many engagements in the Western Theater of the American Civil War. Continue Reading »
General Order No. 20 (U.S. War Department)
On January 25, 1863, the U.S. War Department issued General Order 20, relieving Ambrose E. Burnside as commander of the Army of the Potomac and replacing him with Joseph Hooker. Continue Reading »
General Order No. 8 (Army of the Potomac)
Never Issued because President Lincoln did not approve it, Ambrose Burnside's General Order No. 8 proposed the wholesale dismissal of Union officers who Burnside considered hostile to his command. Continue Reading »
Army of the Potomac
The Army of the Potomac was the Union's primary fighting force in the Eastern Theater throughout most of the American Civil War. Continue Reading »
General Order No. 184 (Army of the Potomac)
On November 14, 1862, Major General Ambrose E. Burnside issued General Order No. 182 (Army of the Potomac) dividing the Army of the Potomac into three "grand divisions." Continue Reading »
McClellan, George B.
During the American Civil War, George Brinton McClellan twice served as the commanding general of the Army of the Potomac and briefly as the general-in-chief of all Union armies. Continue Reading »
Burnside, Ambrose E.
Ambrose Everett Burnside was an American politician, industrialist, inventor, and one of five generals to command the Army of the Potomac during the American Civil War. He also served as commander of the Department of the Ohio, where he worked to eradicate opposition to the Union war effort by Peace Democrats and Copperheads. Continue Reading »
President Lincoln's Executive Order Relieving General G. B. McClellan and Making Other Changes
On November 5, 1862, President Lincoln issued an executive order replacing George B. McClellan with Ambrose E. Burnside as commander of the Army of the Potomac. Continue Reading »
2nd Regiment Ohio Volunteer Cavalry
In the American Civil War, Ohio provided the federal government with 260 regiments of men, including infantry, artillery, and cavalry units. Ohioans also served in several other regiments from other states, most notably from Kentucky, West Virginia, and Massachusetts, as well as in federal units. Almost 330,000 Ohio men, including 5,092 African Americans, served in the Union military during the conflict. Continue Reading »
Army of Kentucky (USA)
Formed on October 7, 1862, the Army of Kentucky served for eight months in the states of Kentucky and Tennessee, before being disbanded on June 8, 1863. Continue Reading »
Battle of Port Hudson
SEE Siege of Port Hudson»
Siege of Port Hudson
Also known as the Battle of Port Hudson, the Siege of Port Hudson was the longest siege in the history of American warfare. Continue Reading »
Special Order No. 51 (Department of the Ohio)
On October 7, 1862, the Major General Horatio G. Wright, commanding Department of the Ohio, issued Special Order No. 51, assigning Major General Gordon Granger to command the newly created Army of Kentucky. Continue Reading »
1st Regiment Ohio Volunteer Cavalry
In the American Civil War, Ohio provided the federal government with 260 regiments of men, including infantry, artillery, and cavalry units. Ohioans also served in several other regiments from other states, most notably from Kentucky, West Virginia, and Massachusetts, as well as in federal units. Almost 330,000 Ohio men, including 5,092 African Americans, served in the Union military during the conflict. Continue Reading »
General Orders No. 94 (U.S. War Department)
On November 1, 1861, the U.S. War Department issued General Order No. 94 announcing the retirement of Lieutenant-General Winfield Scott and the appointment of Major-General George B. McClellan to assume command of the Army of the United States. Continue Reading »
General Order, No. 184 (U.S. War Department)
On November 8, 1862, the U.S. War Department issued General Orders No. 184, naming Major General Nathaniel P. Banks as commander of the Department of the Gulf. Continue Reading »
5th Regiment Ohio Volunteer Cavalry
In the American Civil War, Ohio provided the federal government with 260 regiments of men, including infantry, artillery, and cavalry units. Ohioans also served in several other regiments from other states, most notably from Kentucky, West Virginia, and Massachusetts, as well as in federal units. Almost 330,000 Ohio men, including 5,092 African Americans, served in the Union military during the conflict. Continue Reading »
Canby, Edward Richard Sprigg
A career United States Army officer, Major General Edward Canby commanded the victorious Union troops during the Battle of Fort Blakely, which is often cited as the last major infantry engagement east of the Mississippi River during the American Civil War. Continue Reading »

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Ohio Civil War Central: An Encyclopedia of the American Civil War