On June 29, 1863, just two days before the Battle of Gettysburg, he was promoted to brigadier general of volunteers by Pleasonton, although this appointment was never confirmed by the United States Senate.
Den 29. juni 1863, blot to dage før slaget ved Gettysburg, blev han af Pleasonton forfremmet til brigadegeneral i den frivillige hær, selv om denne forfremmelse aldrig blev godkendt af Senatet.