Kelly resumes his role as colonel of his regiment as more senior officers return to the brigade. However, with the death of Colonel Richard Byrnes at the Battle of Cold Harbor in 1864, he again commands the brigade. At the age of 42, he dies during the Siege of Petersburg on June 16, 1864 when he is shot through the head while leading the Irish Brigade forward against Confederate earthworks. His body is recovered and sent back to New York for his funeral. He is buried in Calvary Cemetery in Woodside, Queens, New York.
In 1861 Smyth enlists in the Union army in an Irish American three-months regiment, the 24th Pennsylvania, and is quickly made a captain. He is later commissioned as a major of the 1st Delaware Infantry, a three-years regiment. He serves at the battles of Chancellorsville and Fredericksburg, following which he is promoted to lieutenant colonel and then to colonel. During the Gettysburg campaign, he commands the 2nd Brigade, 3rd Division of the II Corps. During the Battle of Gettysburg, his men help defend Cemetery Ridge and advance to the area of the Bliss farm to oust enemy sharpshooters. He is wounded on the third day of the battle and relinquishes command briefly.
Smyth retains brigade command during the reorganization of II Corps before Ulysses S. Grant‘s Overland Campaign. He leads the second brigade of the first division from March 25 to May 17, 1864. When Colonel Samuel S. Carroll is wounded, Smyth is transferred to his command, the third brigade of second division, the Gibraltar Brigade. In October 1864, he is promoted to brigadier general during the Siege of Petersburg. He retains command of his brigade throughout the siege.
On March 18, 1867, PresidentAndrew Johnson nominates Smyth for posthumous appointment to the grade of brevet major general of volunteers to rank from April 7, 1865, the date he was mortally wounded, and the United States Senate confirms the appointment on March 26, 1867. He is the last Union general killed or mortally wounded during the war, and is buried in Wilmington and Brandywine Cemetery in Wilmington, Delaware.
Meagher is educated at Roman Catholicboarding schools. When he is eleven, his family sends him to the Jesuits at Clongowes Wood College in County Kildare. It is at Clongowes that he develops his skill of oratory, becoming at age 15 the youngest medalist of the Debating Society. After six years, he leaves Ireland for the first time, to study in Lancashire, England, at Stonyhurst College, also a Jesuit institution. He returns to Ireland in 1843, with undecided plans for a career in the Austrian army, a tradition among a number of Irish families.
Meagher becomes a member of the Young Ireland Party in 1845 and in 1847 is one of the founders of the Irish Confederation, dedicated to Irish independence. In 1848 he is involved, along with William Smith O’Brien, in an abortive attempt to mount an insurrection against English rule. Arrested for high treason, he is condemned to death, but his sentence is commuted to life imprisonment in Van Diemen’s Land, now Tasmania.
Meagher escapes in 1852 and makes his way to the United States. After a speaking tour of U.S. cities, he settles in New York City, studies law, and is admitted to the bar in 1855. He soon becomes a leader of the Irish in New York and, from 1856, edits the Irish News.
At the close of the war, Meagher is appointed secretary of Montana Territory where, in the absence of a territorial governor, he serves as acting governor.
In the summer of 1867, Meagher travels to Fort Benton, Montana, to receive a shipment of guns and ammunition sent by General William Tecumseh Sherman for use by the Montana Militia. On the way to Fort Benton, the Missouri River terminus for steamboat travel, he falls ill and stops for six days to recuperate. When he reaches Fort Benton, he is reportedly still ill.
Sometime in the early evening of July 1, 1867, Meagher falls overboard from the steamboatG. A. Thompson, into the Missouri River. His body is never recovered. Some believe his death to be suspicious and many theories circulate about his death. Early theories included a claim that he was murdered by a Confederate soldier from the war, or by Native Americans. In 1913 a man claims to have carried out the murder of Meagher for the price of $8,000, but then recants. In the same vein, American journalist and novelist Timothy Egan, who publishes a biography of Meagher in 2016, claims Meagher may have been murdered by Montana political enemies or powerful and still active vigilantes. On the frontier men are quick to kill rather than adjudicate. A similar theory shown on Death Valley Days (1960) has him survive the assassination attempt because his aide had been mistakenly murdered when he accepted one of his trademark cigars, and Meagher uses his apparent death as leverage over his political opponents.
Colonel Dennis O’Kane, officer in the Union Army during the American Civil War, dies on July 4, 1863 of wounds sustained the previous day when fighting with the 69th Pennsylvania Irish Brigade at the Battle of Gettysburg.
Born in Coleraine, County Londonderry, O’Kane is a tavern owner in Philadelphia, Pennsylvania and a member of the 2nd Pennsylvania Militia regiment prior to the Civil War. When the conflict starts, he helps recruit the 24th Pennsylvania Volunteer Infantry, a unit that has the 2nd Pennsylvania Militia as its nucleus. Commissioned Major, Field and Staff, on May 1, 1861, he is with his regiment as it serves first in Maryland and then Virginia before their enlistment expires in July 1861.
In August 1861 O’Kane joins with many of the men from the 24th Pennsylvania in re-enlisting to continue the war effort, and they form the basis of what becomes the 69th Pennsylvania Infantry Regiment. Commissioned Lieutenant Colonel, Field and Staff on August 19, 1861, his new regiment is composed largely of Irish immigrants like himself, and they emblazon the Irish harp on their flag. The unit eventually is joined with the 71st, 72nd and 106th Pennsylvania Infantry Regiments to form the famous Philadelphia Brigade.
O’ Kane serves as second-in-command through 1862, participating in the Peninsular Campaign of May and June, the Second Battle of Bull Run in August, and the September 1862 Battle of Antietam, where his brigade is caught in the West Woods area and takes heavy losses. In November 1862, the 69th Pennsylvania’s commander, ColonelJoshua T. Owen, is promoted to Brigadier General, US Volunteers. O’Kane is advanced to Colonel on December 1, 1862 to fill the vacancy.
At the Battle of Fredericksburg on December 14, 1862, O’Kane leads his men in the third of four waves of futile Union charges on strong Confederate positions at Marye’s Heights south of the town, and sees his regiment sustain fifty-one casualties. In May 1863 during the Battle of Chancellorsville, his brigade is held in reserve and sees limited action.
During the Battle of Gettysburg in July 1863, O’Kane finds the 69th Pennsylvania positioned along a rock fencing in the middle of the Union lines that becomes famous as “The Angle.” That position becomes the epicenter of Pickett’s Charge on July 3, the third day of the battle, as the remnants of the Confederate forces, having been much devastated from Union artillery fire, crash over the rock walls and engage the Philadelphia Brigade in brutal hand-to-hand fighting.
O’Kane is shot in the head at the wall and dies the following day. His regiment again takes high casualties but succeeds in helping to repulse the rebels and defeat the charge. The monument for the 69th Pennsylvania Infantry in Gettysburg National Military Park stands on the spot where O’Kane was mortally wounded.
Although Mulholland later claims that at the Battle of Gettysburg on July 2, 1863 he personally took command of the 140th Pennsylvania Infantry and led it into action, this fact is mentioned in neither his own official report of the battle, nor that of the lieutenant colonel commanding the 140th. When the 116th is returned to full strength in early 1864, he is promoted to colonel. He is wounded a second time at the Battle of the Wilderness on May 5, 1864. At the Battle of Spotsylvania Court House he is wounded a third time, but remains in the hospital only ten days. Resuming his command, he is dangerously wounded again at the Battle of Totopotomoy Creek. He recovers rapidly and commands his brigade in all the actions around the Siege of Petersburg, particularly distinguishing himself by storming a fort on the Boydton Plank Road. He is mustered out of the volunteer service on June 3, 1865.
On May 4, 1866, PresidentAndrew Johnson nominates Mulholland for the brevet grade of brigadier general of volunteers to rank from March 13, 1865 for his conduct at the Battle of the Wilderness and the U.S. Senate confirms the appointment on May 18, 1866. On January 13, 1869, President Johnson nominates Mulholland for appointment to the brevet grade of major general of volunteers, to rank from March 13, 1865 for his actions on the Boydton Plank Road and the Senate confirms the appointment on February 16, 1869. The brevet is issued February 20, 1869. It is the last brevet of major general issued for service during the Civil War.
Returning to civilian life after the war, Mulholland is appointed Chief of Police in Philadelphia in 1868, and signalizes his administration by the good order in which he keeps both the force and the city. President Grover Cleveland appoints him United States Pension Agent, in which office he is continued by Presidents William McKinley and Theodore Roosevelt. He is considered an authority on the science of penology, and also devotes much of his leisure time to art studies, and as a lecturer and writer on the Civil War and its records. He compiles a history of the 116th Regiment, and another of those to whom Congress voted the Medal of Honor. In the Catholic affairs of Philadelphia, he is always active and a leader among the best known laymen.
St. Clair Augustin Mulholland dies on February 17, 1910 in Philadelphia, Pennsylvania. He is buried at Old Cathedral Cemetery, Philadelphia.
Colonel Patrick Kelly of the Union Army‘s Irish Brigade (The Fighting Irish) dies on June 16, 1864 at the Siege of Petersburg during the American Civil War while leading the Irish Brigade forward against a Confederate position.
Colonel Dennis O’Kane, officer in the 
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