Question: What is the SubstantiveRank of the US Union Civil War General born April 20 , 1823 ?

text: List of American Civil War generals (Union)
Union generals -- R

The following lists show the names, substantive ranks, and brevet ranks (if applicable) of all general officers who served in the United States Army during the Civil War, in addition to a small selection of lower-ranked officers who received brevets as general officers; while some 1,600 officers received or were nominated for brevets as general officers in the course of the war (or immediately following it for service during the war), only a small selection is listed here; only those who were killed in action, served as department heads within the army, had revoked or incomplete appointments or became U.S. President are listed here. In addition to their names and ranks, there is a small set of notes after every entry listing Medal of Honor or Thanks of Congress citations, West Point graduation dates, important political or Army offices held, retirements or deaths during the war (whether in action or other means), notable relations, rejections or expiration of appointments, or unique facts pertaining to this article (i.e. youngest general, last surviving general, etc. ); for all other information on their lives and accomplishments, please refer to their individual entries. If available, ranks are followed by the to rank from dates (i.e. the date on which the commission is effective) rather than the date of appointment or confirmation, which were generally months if not years later; this is particularly true in the case of brevets, most of which were granted after the war between 1866 and 1869. Note on abbreviations:
Name Substantive Rank Notes
Ramsay , George Douglas Brigadier general , USA ( September 15 , 1863 ) USMA , 1820 Retired September 12 , 1864 Chief of Ordnance ( 1863-1864 )
Ransom , Thomas Edward Greenfield Brigadier general , USV ( November 29 , 1862 ) Died October 29 , 1864
Raum , Green Berry Brigadier general , USV ( February 15 , 1865 )
Rawlins , John Aaron Brigadier general , USA ( March 3 , 1865 ) Chief of Staff to General Ulysses S. Grant Secretary of War ( 1869 )
Read , Theodore Lieutenant colonel , USV KIA , Battle of High Bridge ( April 6 , 1865 )
Reid , Hugh Thompson Brigadier general , USV ( April 9 , 1863 ) Resigned April 4 , 1864
Reilly , James William Brigadier general , USV ( July 30 , 1864 ) Resigned April 20 , 1865
Reno , Jesse Lee Captain , USA Major general , USV ( July 18 , 1862 ) USMA , 1846 KIA , Battle of South Mountain ( September 14 , 1862 )
Revere , Joseph Warren Brigadier general , USV ( October 25 , 1862 ) Forced to resign August 10 , 1863 Grandson of Paul Revere Cousin of Paul Joseph Revere
Revere , Paul Joseph Colonel , USV DOW , Battle of Gettysburg ( w. July 2 , 1863 , d. July 4 , 1863 ) Grandson of Paul Revere Cousin of Joseph Warren Revere
Reynolds , John Fulton Lieutenant colonel , USA ( May 14 , 1861 ) Major general , USV ( November 29 , 1862 ) USMA , 1841 Superintendent , USMA ( 1860-1861 ) KIA , Battle of Gettysburg ( July 1 , 1863 )
Reynolds , Joseph Jones Major general , USV ( November 29 , 1862 ) USMA , 1843
Rice , Americus Vespucius Brigadier general , USV ( May 31 , 1865 ) U.S . Congressman from Ohio ( 1875-1879 )
Rice , Elliott Warren Brigadier general , USV ( June 22 , 1864 ) Brother of Samuel Allen Rice
Rice , James Clay Brigadier general , USV ( August 17 , 1863 ) KIA , Battle of Spotsylvania ( May 10 , 1864 )
Rice , Samuel Allen Brigadier general , USV ( August 4 , 1863 ) DOW , Battle of Jenkins ' Ferry ( w. April 30 , 1864 , d. July 6 , 1864 ) Brother of Elliott Warren Rice
Richardson , Israel Bush Major general , USV ( July 4 , 1862 ) USMA , 1841 DOW , Battle of Antietam ( w. September 17 , 1862 , d. November 3 , 1862 )
Ricketts , James Brewerton Major , USA Brigadier general , USV ( July 21 , 1861 ) USMA , 1839
Ripley , James Wolfe Brigadier general , USA ( August 3 , 1861 ) USMA , 1814 Chief of Ordnance ( 1861-1863 ) Uncle of General Roswell Sabine Ripley , CSA
Roberts , Benjamin Stone Major , USA ( May 13 , 1861 ) Brigadier general , USV ( July 16 , 1862 ) USMA , 1835