Wednesday December 26 1860

• The United States troops, under the command of Maj. Robert Robert Anderson, US Army, are transferred from Fort Moultrie to Fort Sumter, Charleston Harbor, Charleston, SC.
• The United States Revenue Cutter, the William Aiken, surrenders to the South Carolina state forces, Charleston Harbor, Charleston, SC.

Thursday December 26 1861

• Brig. Gen. Philip St. George Cocke, CSA, commits suicide at his home, "Belmead," Powhatan County, VA, after having his health deteriorate for 8 months in the field.
• Engagement at Chustenahlah, Indian Territory, Cherokee Nation, between Confederates and some Pro-Union Creek Indians led by Hopoeithleyohola.
• Martial law is proclaimed in Saint Louis, MO, and in and about all railroads in the State of Missouri, is issued by Maj. Gen. Henry Wager Halleck, USA.
• The US Government orders the release of James Mason and John Slidell from Fort Warren, Boston Harbor, MA.

Friday December 26 1862

• Skirmish at Bacon Creek, near Munfordville, KY, with Brig. Gen. John Hunt Morgan, CSA.
• The capture of the Union stockade at Nolin, KY, by Brig. Gen. John Hunt Morgan, CSA.
• The Federal capture of a guerrilla camp in the eastern part of Powell County, KY.
• President Abraham Lincoln decides not to stay the execution of 38 Sioux Indians for the Minnesota uprising and are hanged at Mankato, MN.
• The Stone's River, or Murfreesborough Tennessee, Campaign. (Dec 26-Jan 5)
• Skirmish at Franklin, TN, as Maj. Gen. William S. Rosecrans, USA, advances towards Gen. Braxton Bragg, CSA, who is at Murfreesboro, TN., the Stone's River Campaign.
• Skirmish at Knob Gap, TN.
• Skirmish at La Vergne.TN.
• Mutiny of the Anderson Cavalry, around Nashville, TN, of men from Pennsylvania.
• Skirmish at Nolensville, TN.
• Maj. Gen. John Sedgwick, USA, supersedes Gen. Darius N. Couch in the command of the 2nd US Army Corps, the Army of the Potomac, VA.

Saturday December 26 1863

• William Anderson Pile, USA, is appointed Brig. Gen.
• Skirmish at Sand Mountain, AL.
• Skirmish with Indians near Fort Gaston, CA.
• Skirmish near Fort Gibson, the Indian Territory.
• The CSS Alabama, captures and burns two large vessels, the Highlander, and the Sonora, near the Straits of Malacca.
• Skirmish at Port Gibson, MS.
• Federal scout from Forsyth, MO, to Batesville, AR. (Dec 26-Jan 2)
• Federal scout from Salem, MO, against guerrillas. (Dec 26-28 )
• Skirmish at Mossy Creek, TN.
• Skirmish near New Castle, TN, between Brig. Gen. Benjamin H. Grierson's, USA, Cavalry and Maj. Gen. Nathan Bedford Forrest's, CSA, Cavalry.
• Skirmish at Somerville, TN, between Brig. Gen. Benjamin H. Grierson's, USA, Cavalry and Maj. Gen. Nathan Bedford Forrest's, CSA, Cavalry.

Monday December 26 1864

• Federal expedition against Indians in Central Arizona, with skirmish (Jan 1st) at Sycamore Springs, the Arizona Territory. (Dec 26 - Jan 1)
• Action at Sugar Creek, TN, as Lieut. Gen. John B. Hood, CSA, and the remnants of the Confederate Army of Tennessee cross the Tennessee River towards Tupelo, MS.
• Federal scout from Fairfax Court-House to Hopewell Gap, VA, with the Federals capturing two soldiers belonging to the 4th VA Cavalry at Thoroughfare Gap, at Mrs. Lewis' house. (Dec 26-27)

Tuesday December 26 1865