The Confederacy turns to a new form of naval warfare, expels the last Federal troops from Texas, and continues its military buildup.
Virginia militia seize the Gosport Navy Yard at Norfolk after Federals abandon the vital naval base with controversial haste.
President Abraham Lincoln issues an order imposing a naval blockade on ports in the Confederate states.
The fall of Fort Sumter and Abraham Lincoln’s militia proclamation spark mass mobilizations in both North and South.
Federals break an unofficial truce by reinforcing Fort Pickens, a vital installation near Pensacola, Florida.
President Abraham Lincoln orders the reinforcement of Fort Pickens at Pensacola, but mix-ups in orders make it more difficult than intended.