Civil War battle flags were used by both the Union and Confederate armies during the American Civil War (1861-1865). These flags served as important symbols of identity and pride for the soldiers, helping to distinguish units on the battlefield. The flags often featured unique designs, colors, and insignia that represented specific regiments or divisions. The Union flag, commonly known as the Stars and Stripes, had 34 stars at the war's start, representing the states in the Union. The Confederate battle flag, often recognized by its blue cross and white stars on a red background, became a symbol of the Confederacy and is still a topic of discussion today.