Artillery fires on the Star of the West from Morris Island as it crosses into the main entrance channel to Charleston Harbor. As the ship comes about, Fort Moultrie opens fire, also with cannon shot. A mile and a half from Fort Sumter, the ship withdraws.
After privately considering William Yancey, Howell Cobb, Robert Toombs, Alexander Stephens, and Robert Barnwell Rhett for President of the Confederate States of America, the Convention settles on Jefferson Davis. They select Alexander Stephens, both pro-Union and a friend of Abraham Lincoln, as vice-president
Beginning at 4:30 am on the 12th and continuing until the morning of the 13th, Confederate batteries along the shore of Charleston Harbor fire on Fort Sumter under the command of Major Robert Anderson. Anderson arranges a surrender with Texas Senator Louis Wigfall on the morning of the 13th.
(First) Manassas (Confederate)
(First) Bull Run (Union)
About 25 miles southwest of Washington the first major battle of the Civil War pits Irvin McDowell [US] against P. G. T. Beauregard [CS] and Joe Johnston [CS].
British mail packet Trent, carrying James M. Mason and John Slidell, Confederate commissioners to London and Paris, is halted in the Bahama Channel by the U.S. warship San Jacinto.