North America 1862: Capture of New Orleans
Union successes in Tennessee forced the Confederates to send troops and materiel north up the Mississippi River, stripping their defenses in the south. However, this made New Orleans vulnerable, and, when the Union fleet sailed upriver to attack it, it fell swiftly. Through simple negligence, the Confederacy had lost its largest city and most important commercial port.
9–24 Apr 1862 British & Spanish withdraw from Mexico▲
Realizing French ambitions, Great Britain and Spain ended their part in the Mexican intervention and withdrew their troops.
12 Apr–? Jul 1862 Confederates abandon Arizona▲
Union forces expelled the Confederates from New Mexico Territory, ending the Confederate Territory of Arizona.
18–28 Apr 1862 Battle of Forts Jackson & St Philip▲
Their blockade now secure, the Union Navy now sought to cut off Confederate supply routes further by seizing control of the Mississippi River. To this end, the Union fleet under David G. Farragut forced passage between Confederate Forts Jackson and St. Philip to advance on New Orleans.
25 Apr–1 May 1862 Capture of New Orleans▲
Union forces under Farragut captured New Orleans, the largest city in the Confederacy and most important harbor.
29 Apr–30 May 1862 Siege of Corinth▲
Following their victory at Shiloh, Union forces under Henry Halleck were able to move in and besiege the Confederate stronghold of Corinth, Mississippi. Halleck captured Corinth from Confederate forces under P. G. T. Beauregard after one month of fighting.