Following the battle of Helena, Arkansas on July 4, 1863, the 10th and White's (designated as the 9th and 12th) Infantry Regiments were greatly reduced in numbers due to casualties at that engagement. Consequently the two regiments were temporarily consolidated as the 10th MO Infantry Regt (Consolidated). They were enventually separated again. Many men will therefore appear on the rolls of both regiments. Hope this helps some. Jim McGhee