There are three theories about the origin of snipers:
The first theory is that the word originated from a game played by British soldiers stationed in India around 1773. Soldiers often hunt an agile bird called snipe. Because this kind of bird is very difficult to shoot, people who grow on it are called snipers in English. (German: Scharfshütze) Later, the sniper became the official name of the professional sniper.
The second theory is that during the American Revolutionary War, Sharp, a major in the American Field Army, found that if bullets were wrapped in deer oil, it would not only be convenient to load them, but also improve their range and accuracy. He led an independent and mobile team of gunmen, shot and killed many senior British officers with incredible long-range accuracy, and won many major victories at a very small price. Therefore, people call an accurate, calm and steady shooter a sharpshooter. In training and fighting, sharpshooters often wear masks similar to those worn by special forces today to ensure concentration. There is also a sharpshooter, which originated from shooting competitions in the western United States. People erect a wooden stick or board as a target, and circle a dot in the middle with a red pen as a bull's-eye, indicating the mark. The champion of this competition was a sharpshooter, who was later promoted as a sharpshooter.
The third argument is that the real modern sniper's name was first used in the First World War. At that time, the Germans selected soldiers to form free-running snipers. Most of them have the background of hunters and rangers, which has caused great harm to the British and French troops and Russian troops on the east and west lines. To this end, at the end of the war, the British army set up a sniper school to train anti-sniper talents.