The Loose Association of Wargamers

This might help as a starting point. https://www.pinterest.co.uk/conun/confe ... als-flags/

Unlike the Union army, the Confederates did not devise a regulated system of Brigade, Division or Corps flags, The Army of Northern Virginia HQ had a rather plain flag, with the letters ANV on, for example. The Western Confederates flags were different from the Eastern armies. There are no hard and fast formulas I can give you, but a matter of googling those commanders you are after, but you won't find much in the way of flags for larger formations other than regiments.

www.Confederateflags.org may help you if you look in the Army section under Secondary flags, which includes information on headquarters and brigade flags at least in the western theatre.

I read somewhere that Longstreet's Corps continued to use the old 'Stars & Bars' as HQ flags long after the general introduction of the Battle Flag to the Army of Northern Virginia. I can't reference that though, sorry.

My advice is to make it up. Then decide on a realistic size......and double it.

Smashing.