The two guns and solider hats represents the northern and southern soldiers in war
In the 1800's the United States of America was divided over the issue of slavery. North wanted to end slavery but south wanted slaves because over millions of African-Americans slaves worked there. The north and south disagreement about slaves led up to the Civil War.
The Civil War is also called the "War Between States" because it is fought between the states of north and south. Southerns wore gray and were known as the Confederate Soldiers. Northerners wore blue and were known as the Union Soldiers.