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Military 19th Century North America

First Major Battle of American Civil War at Bull Run

In the early months of the American Civil War, both the Union and Confederacy mobilized large volunteer armies with expectations of a quick resolution, as Union forces under Brigadier General Irvin McDowell advanced toward Richmond, Virginia, to end the rebellion swiftly. Confederate troops commanded by Brigadier General P.G.T. Beauregard positioned themselves near Manassas Junction to block the Union advance, with reinforcements from the Shenandoah Valley under Joseph E. Johnston arriving by rail. On July 21, 1861, the opposing armies clashed in the First Battle of Bull Run near Manassas, Virginia, in fighting that involved approximately 35,000 Union and 20,000 Confederate troops across a day of confused engagements around key hills and streams. The battle saw initial Union success give way...

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Military 19th Century North America

Battle of Wilson's Creek Fought in Missouri

Early in the Civil War, Missouri remained in the Union but was bitterly divided, with a pro-Confederate governor and state militia. Union Brig. Gen. Nathaniel Lyon sought to prevent secessionist forces from consolidating. On August 10, 1861, Lyon's outnumbered army of about 5,400 attacked a combined Confederate, Missouri State Guard, and Arkansas force of roughly 12,000 camped near Springfield. Fighting raged on Bloody Hill and surrounding areas; Lyon was killed leading a charge, becoming the first Union general to die in battle. The Confederates held the field, securing southwestern Missouri temporarily and marking the first major Civil War engagement west of the Mississippi.

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Military 19th Century North America

Union Forces Capture Fort Henry in Civil War

Early in the American Civil War, Union strategists aimed to control the Tennessee and Cumberland Rivers to split the Confederacy and open paths into its heartland. Brigadier General Ulysses S. Grant coordinated with naval forces under Flag Officer Andrew H. Foote to assault the Confederate Fort Henry on the Tennessee River. On February 6, 1862, Foote's gunboat flotilla, including ironclads, bombarded the fort while Grant's infantry approached overland. Confederate commander Brigadier General Lloyd Tilghman surrendered after a brief engagement, with most of the garrison escaping to Fort Donelson. The victory marked the first significant Union success in the Western Theater and demonstrated the effectiveness of combined army-navy operations using ironclad vessels.

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Military 19th Century North America

Union Captures Fort Donelson in Civil War

In early 1862, as the American Civil War entered its second year, Union forces sought to break Confederate control over key rivers in the Western Theater. Brigadier General Ulysses S. Grant had recently taken Fort Henry on the Tennessee River and turned his attention to Fort Donelson on the Cumberland River. Confederate commanders including John B. Floyd, Gideon Pillow, and Simon Bolivar Buckner defended the fort with around 16,000 troops. After naval bombardment failed on February 14 and a Confederate breakout attempt on February 15 collapsed, Buckner assumed command and requested terms from Grant on February 16. Grant replied with his famous demand for unconditional surrender, resulting in the capture of nearly 13,000 Confederate soldiers. The victory opened the Cumberland...

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Military 19th Century North America

Monitor and Virginia Clash in First Ironclad Battle

During the American Civil War, the Confederacy converted the scuttled USS Merrimack into the ironclad CSS Virginia to break the Union blockade of Hampton Roads, Virginia. On March 8, Virginia destroyed two wooden Union warships and threatened others. The next morning, March 9, the Union's newly completed ironclad USS Monitor arrived to defend the grounded USS Minnesota. The two armored vessels exchanged fire for several hours in close-range combat, with neither inflicting decisive damage due to their protective plating. The inconclusive duel ended with both ships withdrawing for repairs.

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Military 19th Century North America

Battle of Glorieta Pass Ends Confederate Hopes in West

During the American Civil War, Confederate forces under Brigadier General Henry Hopkins Sibley advanced into New Mexico Territory to secure western resources and supply lines. Union troops, including Colorado and New Mexico volunteers led by Colonel John P. Slough, intercepted them near Glorieta Pass on the Santa Fe Trail. Skirmishes began on March 26, with the decisive engagement occurring on March 28. Union forces destroyed the Confederate supply train in a flanking maneuver while the main battle raged. The Confederates, though tactically successful in the pass itself, lost their logistical base and were forced to retreat. This outcome halted their campaign in the region.

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Military 19th Century North America

Battle of Shiloh Begins in Tennessee

After early Union successes in the western theater of the American Civil War, General Ulysses S. Grant advanced his Army of the Tennessee deep into Confederate territory along the Tennessee River. Confederate forces under General Albert Sidney Johnston concentrated to strike the Union encampment near Shiloh Church before reinforcements could arrive. On April 6, 1862, Johnston launched a surprise assault that drove Union troops back toward the river in fierce fighting across wooded terrain. Johnston himself was mortally wounded during the day, and command passed to General P.G.T. Beauregard. The Confederates nearly achieved a breakthrough but halted short of the Union landing site as darkness fell.

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Military 19th Century Latin America & Caribbean

Mexican Forces Defeat French Army at Battle of Puebla

During the Second French Intervention in Mexico, Napoleon III sought to install a European monarchy and collect debts, sending well-equipped troops under General Charles de Lorencez toward Mexico City. General Ignacio Zaragoza commanded a smaller, largely volunteer Mexican force defending the forts of Loreto and Guadalupe overlooking Puebla. On May 5, 1862, the French launched repeated assaults on the fortified positions amid difficult terrain and weather. Mexican defenders repelled the attacks, inflicting heavy casualties and forcing a French retreat to Orizaba. Though the victory delayed rather than halted the invasion, it boosted national morale and resistance against foreign domination.

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Military 19th Century North America

U.S. Congress Authorizes Army Medal of Honor

During the American Civil War, the Union sought ways to recognize extraordinary valor among its soldiers amid expanding volunteer armies. Earlier legislation had created a Navy version in late 1861. On July 12, 1862, President Abraham Lincoln signed a congressional resolution establishing the Medal of Honor for the Army, to be awarded to enlisted men who distinguished themselves by gallantry in action. The bronze medal featured an eagle clutching arrows and an olive branch above the word "valor," suspended from a ribbon. Initial awards went to soldiers from the Andrews Raid and other engagements, setting the standard for the nation's highest military decoration.

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Military 19th Century North America

Confederates Win Second Battle of Bull Run

By late August 1862, during the American Civil War, Confederate General Robert E. Lee sought to exploit Union disarray in northern Virginia following the Peninsula Campaign. Lee's Army of Northern Virginia, including corps under Stonewall Jackson and James Longstreet, maneuvered to confront Union forces under General John Pope. The multi-day engagement culminated on August 30 with a massive Confederate counterattack on the Union left flank near Groveton and Henry Hill. Pope's army, surprised by Longstreet's arrival and overwhelmed by coordinated assaults, suffered a decisive defeat and retreated toward Washington, D.C. The victory boosted Southern morale and enabled Lee's first invasion of the North.

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Military 19th Century North America

Battle of Antietam Fought in Maryland

By mid-1862, Confederate General Robert E. Lee launched his first invasion of the North during the American Civil War, hoping to gain European recognition and supplies. Union forces under George B. McClellan pursued and intercepted Lee's divided army near Sharpsburg. Fighting erupted at dawn on September 17 along Antietam Creek in a series of brutal assaults across cornfields, woods, and a sunken road. Over twelve hours, Union and Confederate troops clashed in the bloodiest single day in American military history, with more than 22,000 casualties. Lee withdrew across the Potomac, ending the immediate threat to Northern soil. President Lincoln used the tactical Union victory to issue the Emancipation Proclamation.

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Military 19th Century North America

Union Forces Halt Confederate Advance at Perryville

In the fall of 1862, Confederate General Braxton Bragg led an invasion into Kentucky aiming to secure the border state for the South and disrupt Union supply lines during the American Civil War. Union Major General Don Carlos Buell pursued with the Army of the Ohio. On October 8, fighting erupted near the small town of Perryville when Confederate forces under Major General Leonidas Polk launched a surprise attack on Union positions seeking water sources. The battle saw intense fighting across hills and valleys, with Confederate troops gaining local tactical successes but suffering from water shortages and command issues. By evening, Bragg ordered a withdrawal toward Tennessee, leaving Kentucky under firm Union control for the remainder of the war.

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Military 19th Century North America

Union Army Crosses Rappahannock at Fredericksburg

In the American Civil War, Union General Ambrose Burnside replaced George McClellan and planned a swift advance on Richmond. Logistical delays prevented an early crossing of the Rappahannock River. On December 11, 1862, Union engineers began assembling pontoon bridges under Confederate sniper fire from Fredericksburg. Union artillery bombarded the town to clear the way, allowing troops to cross and occupy Fredericksburg. This positioned the Army of the Potomac for the major battle the following day against Robert E. Lee's forces on Marye's Heights.

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Military 19th Century North America

Union Army Defeated at Battle of Fredericksburg

During the American Civil War, Union General Ambrose Burnside sought to capture Richmond by crossing the Rappahannock River at Fredericksburg, Virginia. Confederate forces under General Robert E. Lee had fortified the heights west of the town with strong defensive positions. On December 13, 1862, Union troops launched repeated frontal assaults across open ground against entrenched Confederates, suffering devastating casualties from artillery and rifle fire. Despite numerical superiority of nearly 200,000 total combatants, the Union attacks failed spectacularly. Burnside withdrew his army across the river that night, marking one of the war's bloodiest single-day engagements and a major Confederate victory.

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Military 19th Century North America

Grant Launches Siege of Vicksburg in Civil War

During the American Civil War, control of the Mississippi River was crucial for splitting the Confederacy and securing Union supply lines. After successful campaigns in the Western Theater, Union General Ulysses S. Grant targeted the heavily fortified Confederate stronghold of Vicksburg, Mississippi. On May 18, 1863, Grant's forces surrounded the city, initiating a prolonged siege that combined artillery bombardments, naval support, and infantry assaults. Confederate commander John C. Pemberton defended with limited resources while civilians endured severe hardships. The siege lasted until July 4, when Vicksburg surrendered, marking a turning point in the war.

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Military 19th Century North America

Battle of Gettysburg Begins in American Civil War

In the summer of 1863, Confederate General Robert E. Lee led his Army of Northern Virginia into Pennsylvania seeking a decisive victory to influence Northern opinion and possibly secure foreign recognition for the Confederacy. Union forces under General George G. Meade positioned themselves to intercept the invasion near the small town of Gettysburg. On July 1, the two armies clashed as Confederate troops advanced from the west and north, encountering Union cavalry and infantry in fierce fighting around the town. The Confederates pushed Union lines back through Gettysburg to Cemetery Hill and Culp's Hill by evening. This opening day set the stage for two more days of intense combat that would become the bloodiest battle of the American Civil War.

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Military 19th Century North America

Battle of Gettysburg Concludes with Pickett's Charge

During the American Civil War, Confederate General Robert E. Lee's second invasion of the North reached a climax in southern Pennsylvania. Union forces under Major General George G. Meade had taken defensive positions on high ground around Gettysburg after several days of fighting. On the battle's final day, July 3, 1863, Lee ordered a massive infantry assault across open fields against the Union center on Cemetery Ridge, known as Pickett's Charge, following an artillery bombardment. Approximately 12,500 Confederate troops advanced under devastating fire, briefly breaching lines before being repulsed with heavy casualties. Lee then withdrew his army southward, ending the campaign.

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Military 19th Century North America

Confederate Forces Surrender at Vicksburg

After a 47-day siege, Confederate lieutenant general John C. Pemberton capitulated to Union major general Ulysses S. Grant on July 4, 1863, ending the Battle of Vicksburg. Grant's forces had encircled the Mississippi River stronghold in May, cutting off supplies and bombarding the city relentlessly. Pemberton's 30,000 troops marched out and stacked arms; many were paroled rather than imprisoned. The victory gave the Union complete control of the Mississippi River, splitting the Confederacy in two and fulfilling a key strategic objective outlined by President Lincoln. News of the surrender reached the North on July 4, coinciding with celebrations of Independence Day and boosting morale after earlier setbacks.

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Military 19th Century North America

54th Massachusetts Leads Assault on Fort Wagner

During the American Civil War, Union forces under Brigadier General Quincy A. Gillmore sought to capture Confederate Battery Wagner on Morris Island, South Carolina, as part of efforts to threaten Charleston. The 54th Massachusetts Volunteer Infantry, one of the first African American regiments raised in the North, was selected to lead the second major assault on July 18, 1863, following an initial failed attempt earlier that month. Colonel Robert Gould Shaw commanded the 54th as roughly 600 of its members advanced across open beach under heavy artillery and musket fire toward the fort's walls. The attack failed to take the position, resulting in over 1,500 Union casualties including the death of Shaw and many from the 54th, though the regiment's...

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Military 19th Century North America

Union Forces Capture Orchard Knob at Chattanooga

Following defeat at Chickamauga, Union troops under Maj. Gen. William S. Rosecrans were besieged in Chattanooga by Confederate forces led by Gen. Braxton Bragg occupying surrounding heights. Ulysses S. Grant assumed overall command and replaced Rosecrans with George H. Thomas. On November 23, Grant ordered Thomas's Army of the Cumberland to probe Confederate lines and seize the strategic elevation known as Orchard Knob. Approximately 14,000 Union soldiers advanced rapidly, overwhelming a small Confederate rear guard of about 600 men who fired only a single volley before retreating. The capture provided Union artillery positions overlooking Missionary Ridge and served as Grant's headquarters for subsequent operations. This action initiated the decisive Chattanooga campaign.

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Military 19th Century North America

Battle of Olustee Fought in Florida

During the American Civil War, Union forces sought to disrupt Confederate control in the Deep South and secure Florida's resources. On February 20, 1864, approximately 5,500 Union troops under Brigadier General Truman Seymour advanced toward Lake City and encountered entrenched Confederate forces of similar size led by Brigadier General Joseph Finegan near Olustee Station. The battle unfolded in pine woods over several hours as Union units attacked piecemeal against strong defensive positions. Confederate artillery and infantry fire inflicted heavy casualties, forcing a Union retreat after ammunition shortages threatened their lines. The engagement became the largest battle fought in Florida during the war and helped maintain Confederate dominance in the state's interior.

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Military 19th Century North America

Union Assault at Cold Harbor Repulsed in Civil War

By spring 1864, Union General Ulysses S. Grant had launched his Overland Campaign to destroy Robert E. Lee's Army of Northern Virginia rather than merely capture Richmond. After inconclusive fighting at the Wilderness and Spotsylvania, Grant maneuvered southeast, seizing the Cold Harbor crossroads in late May. On June 3, Grant ordered a massive frontal assault by three corps against Lee's entrenched lines, which had been reinforced overnight with formidable earthworks and artillery. The attack collapsed within minutes under devastating Confederate fire, resulting in roughly 7,000 Union casualties in under an hour while Lee suffered far fewer. Grant later called the assault his greatest regret, yet the armies remained locked in position until mid-June.

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Military 19th Century North America

Sherman Begins March to the Sea in Civil War

By late 1864, Union forces under General William Tecumseh Sherman had captured Atlanta after a grueling campaign, dealing a major blow to Confederate morale and logistics. With his supply lines vulnerable and facing orders to continue operations, Sherman decided on a bold strategy of total war against the Southern economy. On November 15, he set out from Atlanta with approximately 60,000 troops, destroying railroads, factories, and crops in a scorched-earth advance toward Savannah. The army moved in multiple columns, foraging off the land and systematically wrecking infrastructure to undermine Confederate support. The March to the Sea lasted about a month and ended with the capture of Savannah just before Christmas. It demonstrated the effectiveness of psychological and economic warfare in...

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Military 19th Century North America

Confederacy Authorizes Enlistment of Black Soldiers

By early 1865, the American Civil War had turned decisively against the Confederacy, with Union forces outnumbering and outsupplying Southern armies after years of attrition. Confederate President Jefferson Davis and General Robert E. Lee endorsed limited use of enslaved African Americans as soldiers to bolster dwindling ranks, despite long-standing opposition rooted in slavery ideology. On March 13, 1865, the Confederate Congress passed and Davis signed legislation allowing the enlistment of Black men, though the law did not grant freedom to those who served and left implementation to the president. A few companies formed in Richmond in the war's final weeks, but no large units saw combat before the Confederate surrender at Appomattox. The measure represented a desperate last-ditch effort amid...

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