Evelyn,

Here is his Compiled Military Service Record Information.

Name: James Vande Venter
Enlistment Date: 27 Sep 1862
Service Record:
Enlisted as a Captain on 27 September 1862.
Commission in Commissary Dept Regiment U.S. Volunteers on 27 Sep 1862.
Promoted to Full Captain (Captain & Commissary) on 27 Sep 1862.
Promoted to Brevet Lieutenant Colonel on 13 Mar 1865.
Promoted to Brevet Major on 13 Mar 1865.
Mustered Out Commissary Dept Regiment U.S. Volunteers on 27 Jul 1865.

Jim