Tonja,
Here is a list of battles for the 10th he could have died at any of them after April 1864.
Battles and Engagements
April - June 1862 Corinth Campaign, Mississippi
August - October 1862 Kentucky Campaign
August 30, 1862 Richmond
December 31, 1862 - January 3, 1863 Murfreesboro, Tennessee
May - July 1863 Vicksburg Campaign, Mississippi
May 14, 1863 Jackson, Mississippi
July 1863 Jackson Siege, Mississippi
September 19-20, 1863 Chickamauga, Georgia
February - March 1864 Meridian Campaign, Mississippi
May - September 1864 Atlanta Campaign, Georgia
May 19-22, 1864 Cassville, Georgia
June 27, 1864 Kennesaw Mountain, Georgia
July 22, 1864 Atlanta, Georgia
July - September 1864 Atlanta Siege, Georgia
August 31 - September 1, 1864 Jonesboro, Georgia
September 2, 1864 Lovejoy's Station, Georgia
October 5, 1864 Allatoona, Georgia
November 30, 1864 Franklin, Tennessee
December 15-16, 1864 Nashville, Tennessee
March 17 - April 12, 1865 Mobile, Alabama
April 1-9, 1865 Fort Blakely, Alabama
Good luck,
Gary D. Bray