What did runners do in world war 1?

During World War I, runners played a crucial role in communication on the battlefield, often serving as messengers who transported orders and information between units in the trenches. Given the limitations of telephone lines and the dangers of using signal flares, runners had to navigate dangerous terrain and enemy fire to deliver messages quickly. Their agility and speed were vital for maintaining coordination and responding to rapidly changing situations, making them an essential part of military operations during the war.