Nathaniel P. Banks launches another Federal offensive intended to capture eastern Texas and stop the flow of supplies into the Confederacy via Mexico.
A Federal army-navy expedition to the Texas-Louisiana border meets with embarrassing defeat by less than 50 Confederates defending Sabine Pass.
General Ulysses S. Grant suffers a serious riding accident in New Orleans, with witnesses claiming that he was drunk.
Nathaniel P. Banks’s Federal Army of the Gulf captures the last Confederate stronghold on the Mississippi River, opening the waterway to Federal commerce and cutting the Confederacy in two.
The siege of Port Hudson continues to demoralize the Confederate defenders, while another Confederate army tries to break the siege by attacking Federal positions near New Orleans.
Nathaniel P. Banks launches another doomed assault on the Confederate defenses at Port Hudson, Louisiana, but the Federal siege continues.