President Abraham Lincoln submits his first annual message to Congress, in which he describes the current state of affairs and reiterates his view that the Union must be preserved by all necessary means.
The second session of the first Republican-dominated Congress opened with many intent on destroying slavery as a means to win the war.
Abraham Lincoln calls upon new General-in-Chief George B. McClellan, who refuses to see him. This symbolizes the evolving relationship between Lincoln and McClellan.
The feud that had begun in October between Jefferson Davis and one of his top generals continues into this month.
Elections take place throughout the Confederacy to replace the provisional national government with a permanent one.
John C. Fremont finally gets the order removing him from command of the Federal Army of the West and replacing him with David Hunter.