The motto of the Confederacy – Deo Vindice – “Under God, our Vindicator”.
The national motto, Deo vindice, meaning ‘(With) God (as) our defender/protector‘.[a] 
The motto “Deo Vindice” is historically associated with the Confederate States of America during the American Civil War. It translates to “With God as our Defender” or “Under God, our Vindicator.” Given your interest in history and the fact that you’re running an e-commerce store selling flags, bumper stickers, and t-shirts, it’s important to be aware of the historical context and potential controversy associated with this motto.