The men had been marching for days, it seemed. It was late June in the year 1863, and they had been fighting for a long time. These Union soldiers were serious men and they recognized how important it was for them to keep fighting this war. Even so, there were times when it wasn't easy. In their heavy blue uniforms made of dyed blue wool, they felt very hot. The sweat rolled down their foreheads and into their eyes, stinging them shut. Even though,...