The first tanks were developed by the British during the First World War. They were used to break through enemy lines and to provide support for infantry. Tanks were a new and powerful weapon that helped the Allies to win the war.
Airplanes
Airplanes were also used for the first time in combat during the First World War. They were used for reconnaissance, bombing, and air-to-air combat. Airplanes played an important role in the war and helped to change the way that wars were fought.
Machine guns
Machine guns were another new weapon that was used during the First World War. They were capable of firing hundreds of rounds per minute, and they could be used to mow down enemy troops. Machine guns were used to great effect by both sides in the war, and they helped to make the war one of the deadliest conflicts in history.