The Confederate Signal Corps played a crucial role during the American Civil War, primarily responsible for communication and intelligence gathering. Their main duties included:

1. Signal Communication: The Signal Corps utilized flags, torches, and other visual signals to communicate between units, especially when radio technology was not available. This was essential for coordinating troop movements and relay orders.

2. Intelligence Gathering: They were tasked with observing enemy movements and reporting back to their commanders. This often involved deploying signal officers to high vantage points to watch for troop movements and supply lines.

3. Telegraph Operation: As the war progressed, the Signal Corps also managed military telegraph lines, which were critical for long-distance communication. They set up and maintained telegraph systems in various theaters of the war.

4. Construction of Signal Stations: The corps was responsible for building signal stations that could facilitate visual communication over long distances. This often involved selecting strategic locations that provided clear sight lines.

5. Weather Observation: They also kept track of weather conditions, which could impact military operations, particularly in terms of visibility for signals and the movement of troops.

Overall, the Confederate Signal Corps was integral to maintaining communication and gathering information, which were vital for military strategy and operations throughout the Civil War.