The First National Flag of the Confederacy featured a layout equivalent to the Union flag however differed extensively in

https://simonadmb548.valiantfield.com/posts/behind-the-scenes-preparing-for-a-civil-war-flag-reenactment-event-2

The First National Flag of the Confederacy featured a design resembling the Union flag but differed extensively in colour and symbolism, emphasizing Southern independence.