I have a question about the 18th:

Doyle Taylor says "Carroll's 18th Arkansas was one of the few Arkansas "Volunteer" regiments raised in 1862. In first was organized in February at Pine Bluff from individual companies."

Bryan Howerton's Post says: "I enlisted at Cotton Plant, Ark., in March, 1862..... we were ordered back to Little Rock, and landed at DeVall's Bluff on March 9. Rain fell in torrents that day; but we pursued our journey by the Memphis and Little Rock Railroad to Argenta, across the river from Little Rock, where we were sworn into service in the presence of Governor Rector and ordered to Corinth, Miss."

The Gerdes site says "The 18th Arkansas Infantry was organized at DeValls Bluff, Arkansas, on April 2, 1862, composed of ten volunteer companies from central Arkansas"

What is the correct organization date for the regiment?