His Civil War enlistment record, on file at the Indiana State Archives, records Henry H. Blockson, age 23, blue eyes, light hair, height 5’7”, fair complexion, residence Wabash Co., Indiana, born in Marion, Indiana, enlisted as a private on 1 Feb 1865 in Company F, 153rd Indiana Regiment, mustered out on 4 Sep 1865 at Louisville, Ky.