The CSA Battle Flag that we all associate with the confederacy is really the Army of Tennesse Battle Flag, (which is also the CSN Jack.)
The square field that was placed on some state flags was a version of the Army of Northern Virginia or the Department of South Carolina, Georgia and Florida.
I don't know about Army level battle flags, but I believe that the CSN Ensign and Jack were official.
the ONLY official flags were the THREE National flags:
1.Stars & Bars (at least 3 variations: 7,11& 13 stars)
2 Stainless Banner &
3. Third National.
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