The Union flag, generally known as the Stars and Stripes, symbolized harmony and patriotism

https://myleslgdi553.summitquill.com/posts/flags-as-historical-artifacts-insights-into-the-civil-war-era

The Union flag, generally known as the Stars and Stripes, symbolized team spirit and patriotism, offering thirteen stripes and a box of blue with stars that represented every single country within the union.