Michael Corcoran was an Irish-American general in the Union Army during the American Civil War and a close confidant of President Abraham Lincoln. As its colonel, he led the 69th New York Regiment to Washington, D.C., and was one of the first to serve in the defense of Washington by building Fort Corcoran. He then led the 69th into action at the First Battle of Bull Run. After promotion to brigadier general, he left the 69th and formed the Corcoran Legion, consisting of at least five other New York regiments.
Brig. Gen. Michael Corcoran
Officers of the 69th New York Volunteer Regiment pose with a cannon at Fort Corcoran in 1861. Michael Corcoran at left
Currier & Ives lithograph of Brig. Gen. Michael Corcoran
Monument to Fighting 69th in Ballymote
During the American Civil War, the United States Army, the land force that fought to preserve the collective Union of the states, was often referred to as the Union Army, the Grand Army of the Republic, the Federal Army, or the Northern Army. It proved essential to the restoration and preservation of the United States as a working, viable republic.
Recruiting poster for the 1st New York Mounted Rifles Regiment
General George B. McClellan with staff and dignitaries, including from left to right: Gen. George W. Morell, Lt. Col. A.V. Colburn, Gen. McClellan, Lt. Col. N.B. Sweitzer, Prince de Joinville (son of King Louis Philippe of France), and the prince's nephew, Count de Paris (on far right)
The champions of the Union, an 1861 lithograph by Currier and Ives
Officers of the 3rd Massachusetts Heavy Artillery Regiment defending the national capital of Washington, D.C., in 1865, the final year of the Civil War