Question: what is the Substantive Rank of the Civil War general born April 15 , 1822 ?

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

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 Brevet Rank Notes
Daggett , Aaron Simon Lieutenant colonel , USV ( January 23 , 1865 ) Brigadier general , USV ( March 13 , 1865 ) Last surviving brevet general ( d. May 14 , 1938 )
Dana , Napoleon Jackson Tecumseh Major general , USV ( November 29 , 1862 )  USMA , 1842 Resigned May 27 , 1865
Davidson , John Wynn Major , USA ( November 14 , 1861 ) Brigadier general , USV ( February 3 , 1862 ) Major general , USA ( March 13 , 1865 ) Major general , USV ( March 13 , 1865 ) USMA , 1845
Davies , Henry Eugene Major general , USV ( May 4 , 1865 )  Nephew of Thomas Alfred Davies
Davies , Thomas Alfred Brigadier general , USV ( March 7 , 1862 ) Major general , USV ( July 11 , 1865 ) USMA , 1829 Uncle of Henry Eugene Davies
Davis , Edmund Jackson Brigadier general , USV ( November 10 , 1864 )  Governor of Texas ( 1870-1874 )
Davis , Jefferson Columbus Captain , USA ( May 14 , 1861 ) Brigadier general , USV ( December 18 , 1861 ) Major general , USA ( March 13 , 1865 ) Major general , USV ( August 8 , 1864 ) Shot and killed Major General William Nelson in a private altercation ( September 29 , 1862 )
Dawes , Rufus Robinson Colonel , USV ( July 5 , 1864 ) Brigadier general , USV ( March 13 , 1865 ) Resigned August 10 , 1864 U.S . Congressman from Ohio ( 1881-1883 ) Father of Vice President Charles Gates Dawes
Deitzler , George Washington Brigadier general , USV ( November 29 , 1862 )  Resigned August 27 , 1863 Major General of Kansas Militia , 1864
Delafield , Richard Brigadier general , USA ( April 22 , 1864 ) Major general , USA ( March 13 , 1865 ) USMA , 1818 Superintendent , USMA ( 1838-1845 , 1856-1861 , 1861 ) Chief of Engineers ( 1864-1866 )
Dennis , Elias Smith Brigadier general , USV ( November 29 , 1862 ) Major general , USV ( March 13 , 1865 )
Dent , Frederick Tracy Lieutenant colonel , USA ( March 20 , 1864 ) Brigadier general , USV ( April 5 , 1865 ) Brigadier general , USA ( March 13 , 1865 ) USMA , 1843 Brother-in-law of Ulysses S. Grant
Denver , James W Brigadier general , USV ( August 14 , 1861 )  Resigned March 5 , 1863 U.S . Congressman from California ( 1855-1857 ) Territorial Governor of Kansas ( 1857-1858 ) Namesake of Denver , Colorado
De Russy , Gustavus Adolphus Captain , USA ( August 17 , 1857 ) Brigadier general , USV ( May 23 , 1863 ) Brigadier general , USA ( March 13 , 1865 ) USMA ( class of 1839 ) , resigned in 1838 Son of René Edward De Russy Brother-in-law of Henry Jackson Hunt and Lewis Cass Hunt
De Russy , René Edward Colonel , USA ( March 3 , 1863 ) Brigadier general , USA ( March 13 , 1865 ) USMA , 1812 Superintendent , USMA ( 1833-1838 ) Father of Gustavus Adolphus De Russy Father-in-law of Henry Jackson Hunt and Lewis Cass Hunt
De Trobriand , Philippe Régis Dénis de Keredern Brigadier general , USV ( January 5 , 1864 ) Major general , USV ( April 9 , 1865 )
Devens , Charles Jr Brigadier general , USV ( April 15 , 1862 ) Major general , USV ( April 3 , 1865 ) Commander-in-chief , GAR ( 1873-1875 ) Attorney General of the United States ( 1877-1881 )
Devin , Thomas Casimer Brigadier general , USV ( October 19 , 1864 ) Major general , USV ( March 13 , 1865 )
Deweese , John Thomas Lieutenant colonel , USV Brigadier general , USV ( March 13 , 1865 ) U.S . Congressman from North Carolina ( 1868-1870 )
Dewey , Joel Allen Brigadier general , USV ( November 20 , 1865 )  Last Civil War general appointed