10th Arkansas Infantry -- July 27, 1861.
11th Arkansas Infantry -- July 28, 1861.
27th Arkansas Infantry -- July 31, 1862.
28th Arkansas Infantry -- July 19, 1862.

I can't find the date that the 28th Arkansas was redesignated as the 36th Arkansas. I have it somewhere, just can't find it at the moment.

The date on which the 14th Arkansas Infantry was mustered into Confederate service is problematic. It was included in the transfer of State troops to Confederate service in July 1861, but was not accepted. It was offered again in August 1861, was accepted by Richmond later that month, and presumably mustered into service shortly thereafter. The regimental records prior to May 1862 were lost.