His service record should contain most of the personal information you seek. It can be ordered by clicking the red-outlined box at the top of the page.

As far as brigade, division, corps, etc.; The Confederate Army typically used the commander's name to designate the unit, rather than using a system of numbers. Here is a brief history of the 8th. As you read it you will find that the names changed during the war as various individuals commanded at different levels and at different times.

http://www.mississippiscv.org/MS_Units/8th_MS_INF.htm