Need help with specific time line and other pertinent details relating to Parsons’ 12th Texas Cavalry regiment for the following events in the spring of 1862:

1. Ordered to move [with Debray’s Battalion] to the aid of Van Dorn [then in Arkansas]

2. Due to fall of New Orleans, and information that Sibley’s command needed support, these two units were ordered to march to Sibley’s aid

3. Learning that Sibley was relatively safe, orders changed again, but this time only Parsons’ regiment was ordered to Van Dorn [now moving to Ms]

4. Parsons' regiment leaves to join Van Dorn.