How did the hot air balloon effect World War 1?

Hot air balloons were primarily used in World War 1 for reconnaissance and observation purposes. They provided military forces with a vantage point to gather intelligence on enemy movements and positions, significantly enhancing situational awareness on the battlefield. Although eventually replaced by airplanes for aerial reconnaissance, hot air balloons played a crucial role in the early stages of the war by aiding artillery targeting and coordination. Their use exemplified the evolving nature of warfare and the importance of aerial technology during the conflict.