During the American Civil War, the Union soldiers wore blue coats as part of their military uniform. This distinctive color choice was made to differentiate them from the Confederate soldiers, who typically wore gray uniforms.
The choice of blue for Union uniforms was largely influenced by various factors, including the availability of dye and existing military traditions. The dark blue color was chosen for its practicality; it was less likely to show dirt and wear compared to lighter colors. The blue coat became a symbol of the Union cause and helped to unify the troops, instilling a sense of shared identity among soldiers fighting for the North.
In summary, the blue coats worn by Union soldiers during the Civil War were significant for both practical reasons and as a representation of their allegiance to the Union, helping to visually convey the conflict between the North and South.