The Union flag, is named the Stars and Stripes, symbolized unity and patriotism

https://kylerzqqt462.rivertonbrief.com/posts/the-evolution-of-civil-war-flags-designs-and-meanings-2

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 every one nation within the union.