1860:
Republican Convention is held in Chicago, Illinois. William H. Seward, Salmon P. Chase and Abraham Lincoln of Illinois are the leading contenders from a field of 12 candidates. Lincoln wins on the third ballot. Hannibal Hamlin of Maine, an outspoken, long-time abolitionist is chosen for vice-president.

1862:  
Skirmish at Pollocksville, North Carolina

Action at Princeton, West Virginia


1863:  
Battle of Champion's Hill, Mississippi:
The Union army seals the fate of Vicksburg by defeating the Confederates at the Battle of Champion's Hill. General Ulysses S. Grant had successfully run the Confederate gauntlet at Vicksburg and placed the Army of the Tennessee south of the stronghold, the Rebels' last significant holding on the Mississippi River. But he did not move directly on Vicksburg because he knew Joseph Johnston was assembling a Confederate force in Jackson, 40 miles east of Vicksburg.

Instead, Grant advanced toward Jackson and prevented Johnston from uniting with the Vicksburg garrison, headed by John C. Pemberton. After boldly attacking and defeating the Confederates at Jackson, Grant left William T. Sherman's corps to hold Johnston at bay. The Confederates were divided not only by Grant's army, but also by conflicting strategy. Johnston wanted Pemberton to head into northern Mississippi to join forces with his own army. But Pemberton insisted on sticking close to Vicksburg and defending the city.

Grant sent his other two corps, commanded by James McPherson and John McClernand, to take on Pemberton. They found the Confederates on Champion's Hill, about halfway between Jackson and Vicksburg. There, some 30,000 Union troops attacked 20,000 Confederates. The battle swayed back and forth, but the Federals eventually gained the upper hand. Pemberton's men were forced to retreat, and one division was completely cut off from the rest of the army.

Although McClernand's timidity kept the rout from being complete, the engagement was still the decisive action of the Vicksburg campaign. Pemberton fell back into Vicksburg, where Grant followed and soon bottled the Confederates. A six-week siege ensued, and Vicksburg fell on July 4.



Skirmishes at Berry's Ferry and Piedmont Station, Virginia

Skirmishes at Charlestown and Elizabeth Court House, West Virginia


1864:  
Engagement at Mansura, Louisiana

Affair at Spirit Lake, Minnesota


Primary sources:
Official Records of the War of the Rebellion
A Compendium of the War of the Rebellion ; by Frederick Dyer;
The Civil War Day By Day: An Almanac 1861-1865 by E. B. Long with Barbara Long;
National Archives Guide Index