The Battle of Marietta was a series of military operations from June 9 through July 3, 1864, in Cobb County, Georgia

Cobb County, Georgia

Cobb County is a county located in the U.S. state of Georgia. Its county seat and largest city is Marietta, which is located in the center of the county. The county was named for Thomas Willis Cobb, who in the early 19th century was a United States representative and senator from Georgia...

, between Union

Union (American Civil War)

During the American Civil War, the Union was a name used to refer to the federal government of the United States, which was supported by the twenty free states and five border slave states. It was opposed by 11 southern slave states that had declared a secession to join together to form the...

 and Confederate

Confederate States of America

The Confederate States of America was a government set up from 1861 to 1865 by 11 Southern slave states of the United States of America that had declared their secession from the U.S...

 forces during the American Civil War

American Civil War

The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

. The Union forces, led by Maj. Gen.

Major general (United States)

In the United States Army, United States Marine Corps, and United States Air Force, major general is a two-star general-officer rank, with the pay grade of O-8. Major general ranks above brigadier general and below lieutenant general...

 William Tecumseh Sherman

William Tecumseh Sherman

William Tecumseh Sherman was an American soldier, businessman, educator and author. He served as a General in the Union Army during the American Civil War , for which he received recognition for his outstanding command of military strategy as well as criticism for the harshness of the "scorched...

, encountered the Confederate Army of Tennessee

Army of Tennessee

The Army of Tennessee was the principal Confederate army operating between the Appalachian Mountains and the Mississippi River during the American Civil War. It was formed in late 1862 and fought until the end of the war in 1865, participating in most of the significant battles in the Western Theater...

, led by Gen. Joseph E. Johnston

Joseph E. Johnston

Joseph Eggleston Johnston was a career U.S. Army officer, serving with distinction in the Mexican-American War and Seminole Wars, and was also one of the most senior general officers in the Confederate States Army during the American Civil War...

, entrenched near Marietta, Georgia

Marietta, Georgia

Marietta is a city located in central Cobb County, Georgia, United States, and is its county seat.As of the 2010 census, the city had a total population of 56,579, making it one of metro Atlanta's largest suburbs...

. Several engagements were fought during this four-week period, including the battles of Pine Mountain (June 14), Gilgal Church (June 15), Kolb's Farm

Battle of Kolb's Farm

The Battle of Kolb's Farm was fought on June 22, 1864, between Union forces under Maj. Gen. Joseph Hooker and Confederate forces under Lt. Gen. John B. Hood. Hood attempted an attack on the Union force, but poor terrain conditions led to its failure....

 (June 22), and Kennesaw Mountain

Battle of Kennesaw Mountain

The Battle of Kennesaw Mountain was fought on June 27, 1864, during the Atlanta Campaign of the American Civil War. It was the most significant frontal assault launched by Union Maj. Gen. William T. Sherman against the Confederate Army of Tennessee under Gen. Joseph E...

 (June 27). Sherman forced Johnston to withdraw partially on June 18 to protect his supply lines, but the Union forces were not fully victorious until July 3.

On June 14, 1864, Confederate General Leonidas Polk

Leonidas Polk

Leonidas Polk was a Confederate general in the American Civil War who was once a planter in Maury County, Tennessee, and a second cousin of President James K. Polk...

, second cousin of former United States president James K. Polk

James K. Polk

James Knox Polk was the 11th President of the United States . Polk was born in Mecklenburg County, North Carolina. He later lived in and represented Tennessee. A Democrat, Polk served as the 17th Speaker of the House of Representatives and the 12th Governor of Tennessee...

 was scouting enemy positions near Marietta, Georgia with his staff when he was killed in action by a Federal 3 inches (76.2 mm) shell

Shell (projectile)

A shell is a payload-carrying projectile, which, as opposed to shot, contains an explosive or other filling, though modern usage sometimes includes large solid projectiles properly termed shot . Solid shot may contain a pyrotechnic compound if a tracer or spotting charge is used...

 at Pine Mountain. The artillery fire was initiated when Sherman spotted a cluster of Confederate officers—Polk, Hardee

William J. Hardee

William Joseph Hardee was a career U.S. Army officer, serving during the Second Seminole War and fighting in the Mexican-American War...

, Johnston, and their staffs—in an exposed area. He pointed them out to Maj. Gen. Oliver O. Howard

Oliver O. Howard

Oliver Otis Howard was a career United States Army officer and a Union general in the American Civil War...

, commander of the IV Corps

IV Corps (ACW)

There were two corps of the Union Army called IV Corps during the American Civil War. They were separate units, one serving with the Army of the Potomac and the Department of Virginia in the Eastern Theater, 1862–63, the other with the Army of the Cumberland in the Western Theater,...

, and ordered him to fire on them. The 5th Indiana Battery

5th Independent Battery Indiana Light Artillery

5th Indiana Battery Light Artillery was an artillery battery that served in the Union Army during the American Civil War. It was often referred to as Simonson's Battery.-Service:...

, commanded by Capt. Peter Simonson, obeyed the order within minutes. The first round came close and a second even closer, causing the men to disperse. The third shell struck Polk's left arm, went through the chest, and exited hitting his right arm then exploded against a tree, cutting Polk nearly in two.