David G. Farragut begins assembling a Federal naval squadron to take on Vicksburg, one of the last major Confederate strongholds on the Mississippi River.
Samuel R. Curtis regroups his Federal Army of the Southwest and prepares to counterattack Earl Van Dorn’s Confederates at Pea Ridge and Elkhorn Tavern.
Earl Van Dorn’s Confederates attack Samuel R. Curtis’s Federals in northwestern Arkansas, as part of Van Dorn’s mission to reclaim Missouri.
Earl Van Dorn leads a unified Confederate army northward to confront Samuel R. Curtis’s outnumbered Federals in northwestern Arkansas.
Federal forces push Sterling Price’s Missouri State Guards out of their home state, where they join a new army and prepare to counterattack.
The Confederacy turns to a new form of naval warfare, expels the last Federal troops from Texas, and continues its military buildup.