Ranald Slidell Mackenzie
Born: July 27, 1840
Birthplace: Westchester County, New York
Father: U.S.N Commodore Alexander S. Mackenzie 1803 – 1848
Mother: Catherine Alexander Robinson
Education:
1862: Graduated from West Point Military Academy – (1st in class)
Civil War Career:
1862 – 1863: 2nd Lt. United States Army, Corps of Engineers
1862: Assistant Engineer for 9th Army Corps
1862: Served in the Battle of Kelly's Ford
1862: Wounded in the Second Battle of Bull Run
1862: Brevetted 1st Lt. for Gallantry at Second Battle of Bull Run
1862: Served in the Engineer Battalion in Maryland Campaign
1863: 1st Lt. United States Army, Corps of Engineers
1863: Brevetted, Captain for Gallantry, Battle of Chancellorsville
1863: Brevetted Major for Gallantry Battle of Gettysburg
1863 – 1867: Captain, United States Army, Corps of Engineers
1864: Wounded at the Siege of Petersburg, Virginia
1864: Brevetted Lt. Colonel for Gallantry at Petersburg, Virginia
1864: Colonel of 2nd Connecticut Heavy Artillery
1864: Brigade Commander in Washington, D.C. Campaign
1864: Brigade Commander in Shenandoah Valley Campaign
1864: Wounded at the Battle of Cedar Creek
1864: Brevetted Colonel for Gallantry at Battle of Cedar Creek
1864 – 1866: Brigadier General of Union Army Volunteers
1864 – 1865: Brigade Commander in 6th Army Corps
1865: Brevetted Brig. General, U.S. Army for his service in war
1865: Brevetted, Major General, Union Army for his service in war
1865: Cavalry Commander in Richmond, Virginia
1865 – 1866: Waiting on orders from the U.S. War Department
1866: Mustered out of the Union Army on January 15th
Occupation after War:
1863 – 1867: Captain, United States Army, Corps of Engineers
1866 – 1867: Assistant Engineer, Defenses of Portsmouth, New Hampshire
1867: Colonel of United States Army, 41st Infantry Regiment
1867: United States Army Commander in Baton Rouge, Louisiana
1867 – 1869: Colonel of United States Army, 24th Infantry Regiment
1869 – 1882: Colonel of United States Army, 4th Cavalry Regiment
1882 – 1884: Brigadier General in United States Army
1884: Retired from Active Military Service on March 24th
1884 – 1889: Suffered from the effects of Post – traumatic Stress
Died: January 19, 1889
Place of Death: Sister's home in New Brighton, Staten Island, New York
Cause of Death: Post – traumatic Stress and dementia
Age at time of Death: 48 years old
Burial Place: U.S. Military Academy Post Cemetery, West Point, New York
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