As an antebellum New York politician, Sickles was involved in a number of public scandals, most notably the killing of his wife's lover, Philip Barton Key, son of Francis Scott Key. He was acquitted with the first use of temporary insanity as a legal defense in U.S. history. He became one of the most prominent political generals of the Civil War. At the Battle of Gettysburg, he insubordinately moved his III Corps to a position in which it was virtually destroyed, an action that continues to generate controversy in the present day. His combat career ended at Gettysburg when his leg was struck by cannon fire.
After the war, Sickles commanded military districts during Reconstruction, served as U.S. Minister to Spain, and eventually returned to the U.S. Congress, where he made important legislative contributions to the preservation of the Gettysburg Battlefield.
In 1852, he married Teresa Bagioli against the wishes of both families—he was 33, she only 15, although she was sophisticated for her age, speaking five languages. In 1853 he became corporation counsel of New York City, but resigned soon afterward to become secretary of the U.S. legation in London, under James Buchanan, by appointment of President Franklin Pierce. He returned to America in 1855, was a member of the Senate of New York State from 1856 to 1857, and, from 1857 to 1861, was a Democratic representative in the United States Congress (the 35th and 36th United States Congresses).
Sickles' career was replete with personal scandals. He was censured by the New York State Assembly for escorting a known prostitute, Fanny White, into its chambers. He also reportedly took her to England with him, leaving his pregnant wife at home, and presented White to Queen Victoria, using as her alias the surname of a New York political opponent. In 1859, in Lafayette Park, across the street from the White House, Sickles shot and killed Philip Barton Key, son of Francis Scott Key and U.S. Attorney for the District of Columbia, whom Sickles had discovered was having a blatantly public affair with his young wife, Teresa.
Most painful for Sickles, according to Harper's magazine, were the visits of his wife's mother and her clergyman. Both told him that Teresa was distracted with grief, shame, and sorrow, and that the loss of her wedding ring (which Sickles had taken on visiting his home) was more than Teresa could bear.
Sickles was charged with murder and secured several leading politicians as his defense attorneys. Among them was Edwin M. Stanton, later to become Secretary of War, and Chief Counsel James T. Brady, like Sickles a product of Tammany Hall. In an historic strategy, Sickles pled insanity—the first use of a temporary insanity defense in the United States. Before the jury, Stanton argued that Sickles had been driven insane by his wife's infidelity, and thus was out of his mind when he shot Key. The papers soon trumpeted that Sickles was a hero for saving all the ladies of Washington from this rogue named Key..
The graphic confession that Sickles had obtained from Teresa on Saturday proved pivotal. It was ruled inadmissible in court but, leaked by Sickles to the press, was printed in the newspapers in full. The defense strategy ensured that the trial was the main topic of conversations in Washington for weeks and national papers provided extensive coverage sympathetic to Sickles. In the courtroom, the strategy brought drama, controversy, and, ultimately, victory for the defense. Sickles was acquitted. After his acquittal, Sickles then publicly forgave Teresa, and "withdrew" briefly from public life, although he did not resign from Congress. Because of the moral values of the time, the public was more outraged by Sickles's forgiveness of, and seeming reconciliation with, the wife he had publicly branded a harlot and adulteress than by the murder and his unorthodox acquittal.
At the outbreak of the Civil War, Sickles desired to repair his public image and was active in raising United States volunteers in New York. He was appointed colonel of one of the four regiments he organized. He was promoted to brigadier general of volunteers in September 1861, becoming one of the most famous political generals in the Union Army. In March 1862, he was forced to relinquish his command when the U.S. Congress refused to confirm his commission, but he worked diligently to lobby among his Washington political contacts and reclaimed both his rank and his command on May 24, 1862, in time to rejoin the Army in the Peninsula Campaign. Because of this interruption, he missed his brigade's significant actions at the Battle of Williamsburg. Despite his complete lack of previous military experience, he did a competent job commanding the "Excelsior Brigade" of the Army of the Potomac in the Battle of Seven Pines and the Seven Days Battles. He was absent for the Second Battle of Bull Run, having used his political influences to obtain leave to go to New York City to recruit new troops. And he missed the Battle of Antietam because the III Corps, to which he was assigned as a division commander, was stationed on the lower Potomac, protecting the capital.
Sickles was a close ally of Maj. Gen. Joseph Hooker, who was his original division commander and eventually commanded the Army of the Potomac. Both men had notorious reputations as political climbers and as hard-drinking ladies' men. Accounts at the time compared their army headquarters with a rowdy bar and bordello.
Sickles was promoted to major general on November 29, 1862, just before the Battle of Fredericksburg, in which his division was in reserve. Joe Hooker, now commanding the Army of the Potomac, gave Sickles command of the III Corps in February 1863, a controversial move in the army because he became the only corps commander without a West Point education. His energy and ability were conspicuous in the Battle of Chancellorsville. He aggressively recommended pursuing troops he saw in his sector on May 2, 1863. Sickles thought the Confederates were retreating, but these troops turned out to be elements of Thomas J. "Stonewall" Jackson's corps, stealthily marching around the Union flank. He also vigorously opposed Hooker's orders moving him off good defensive terrain in Hazel Grove. In both of these incidents, it is easy to imagine the disastrous battle turning out very differently for the Union if Hooker had heeded his advice.
Sickles had recent knowledge of a new directive from the Army Surgeon General to collect and forward "specimens of morbid anatomy... together with projectiles and foreign bodies removed" to the newly founded Army Medical Museum in Washington, D.C. He preserved the bones from his leg, as well as the cannonball that shattered it, and donated them to the museum, along with a visiting card marked, "With the complements of Major General D.E.S." For several years thereafter, he reportedly visited the limb on the anniversary of the amputation. The museum, now known as the National Museum of Health and Medicine, features the artifact on display still today. (Other Civil War-era specimens of note on display include the hip of General Henry Barnum, and in the collection but not on display include the vertebrae from assassin John Wilkes Booth and President James A. Garfield.)
Sickles was not court-martialed for insubordination after Gettysburg because he had been wounded, and it was assumed he would stay out of trouble. Furthermore, he was a powerful, politically connected man, who would not be disciplined without protest and retribution. Sickles ran a vicious campaign against General Meade's character after the Civil War. Sickles felt that Meade had wronged him at Gettysburg and that credit for winning the battle belonged to him. In anonymous newspaper articles and in testimony before a congressional committee, Sickles maintained that Meade had secretly planned to retreat from Gettysburg on the first day. While his movement away from Cemetery Ridge may have violated orders, Sickles forever asserted that it was the correct move because it disrupted the Confederate attack, redirecting its thrust, effectively shielding their real objectives, Cemetery Ridge and Cemetery Hill. Sickles's redeployment did in fact take Confederate commanders by surprise, and historians have argued about the real ramifications of Sickles's actions at Gettysburg ever since.
Sickles managed to get himself awarded the Medal of Honor for his actions, although it took him 34 years to do so. The official citation that accompanied his medal recorded that Sickles "displayed most conspicuous gallantry on the field, vigorously contesting the advance of the enemy and continuing to encourage his troops after being himself severely wounded."
Sickles served as U.S. Minister to Spain from 1869 to 1874, and took part in the negotiations growing out of the Virginius Affair. He continued his reputation as a ladies' man in the Spanish royal court and was rumored to have had an affair with the deposed Queen Isabella II. In 1871, he married again, following the death of Teresa in 1867, to Senorita Carmina Creagh, the daughter of Chevalier de Creagh of Madrid, a Spanish Councillor of State, and he fathered two children with her.
Sickles was president of the New York State Board of Civil Service Commissioners from 1888 to 1889, was sheriff of New York in 1890, and was again a representative in the 53rd Congress from 1893 to 1895. For most of his postwar life, he was the chairman of the New York State Monuments Commission, but he was forced out by a financial scandal. He had an important effect on preservation efforts at the Gettysburg Battlefield, sponsoring legislation to form the Gettysburg National Military Park, buy up private lands, and erect monuments. One of his key contributions was procuring the original fencing used on East Cemetery Hill to denote park borders. This fencing came directly from Lafayette Park in Washington, D.C. (site of the Key shooting). Of the principal senior generals who fought at Gettysburg, virtually all have been memorialized with statues at Gettysburg. Sickles is a conspicuous exception. But when asked why there was no memorial to him, Sickles supposedly said, "The entire battlefield is a memorial to Dan Sickles." However, there was, in fact, a memorial commissioned to include a bust of Sickles, the monument to the New York Excelsior Brigade. It was rumored that the money appropriated for the bust was stolen by Sickles himself; the monument is displayed in the Peach Orchard with a figure of an eagle replacing Sickles's likeness.
Sickles lived out the remainder of his life in New York City, dying in 1914. He is buried in Arlington National Cemetery.
Rank and organization:
Citation: