October 1 1865 Sunday
USA: The District of West North Carolina was discontinued.
October 2 1865 Monday
Georgia. Under the policy of Presidential Reconstruction, the state of Georgia started a constitutional convention.
Mississippi. Former Confederate Brigadier-General Benjamin Grubb Humphreys was elected provisional Governor of Mississippi.
North Carolina. Under the policy of Presidential Reconstruction, the state of North Carolina started a constitutional convention.
October 7 1865 Saturday
Dakota Territory. Expedition to the Powder River ended.
USA: The Department of Mississippi was transferred from the Military Division of the Gulf to the Military Division of the Tennessee.
USA: Major-General Peter Joseph Osterhaus retained command of the Department of Mississippi.
USA: Brigadier-General Alvin Peterson Hovey resigned from US Volunteers.
October 9 1865 Monday
USA: Brigadier-General Edward Stuyvesant Bragg mustered out of US Volunteers.
October 10 1865 Tuesday
USA: Commodore Joseph Lanman assumed command of the Atlantic Squadron of the US Navy.
October 11 1865 Wednesday
Atlantic Ocean. Captain James Ireson Waddell and the former commerce raider CSS Shenandoah crossed the Equator en route to Great Britain.
USA. US President Andrew Johnson pardoned all captured Confederate executive officers, except for former Confederate President Jefferson Finis Davis.
October 13 1865 Friday
Vermont. Paul Dillingham became Governor of Vermont.
October 16 1865 Monday
USA: Major-General Quincy Adams Gillmore assumed command of the Department of South Carolina, succeeding Brigadier-General Charles Devens.
October 18 1865 Wednesday
South Carolina. Conservative James L Orr was elected Governor of South Carolina.
USA: William Badger Tibbits promoted Brigadier-General USV 21 October 1865 to rank from 18 October 1865.
USA: Brigadier-General Henry Warner Birge resigned from US Volunteers.
October 21 1865 Saturday
Colorado Territory. Alexander Cummings became Governor of the Colorado Territory
USA: Nelson Appleton Miles was promoted Major-General USV 21 October 1865.
USA: Major-General Alexander McDowell McCook resigned from US Volunteers.
USA: William Badger Tibbits confirmed Brigadier-General USV 21 October 1865 to rank from 18 October 1865.
October 23 1865 Monday
USA: Major-General Andrew Atkinson Humphreys assumed full command of the Middle Department, succeeding Major-General Winfield Scott Hancock.
USA: John Henry Ketcham promoted Brigadier-General USV 23 October 1865 to rank from 1 April 1865. Ketcham had previously resigned from US Volunteers to enter Congress on 2 March 1865.
USA: Commodore John S Missroon USN died.
October 25 1865 Wednesday
Florida. Under the policy of Presidential Reconstruction, the state of Florida started a constitutional convention.
October 30 1865 Monday
USA: The state of Wisconsin was transferred from the Department of the Missouri to the Department of the Ohio.