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

https://zionitwe861.clearminster.com/posts/reenactors-and-their-favorite-civil-war-flags-a-community-perspective

The Union flag, is named the Stars and Stripes, symbolized unity and patriotism, presenting 13 stripes and a field of blue with stars that represented each and every country inside the union.