What kind of new weapons were used in World War 1?

Some of the new weapons used in World War 1 included machine guns, tanks, poisonous gas, flamethrowers, and aircraft. Machine guns such as the Maxim gun were able to fire more rounds per minute than traditional rifles, causing devastating casualties. Tanks were introduced for the first time on the battlefield, providing armored protection and firepower. Poisonous gas, such as mustard gas and chlorine gas, was used to incapacitate and kill enemy troops. Flamethrowers were also deployed to clear enemy trenches and bunkers. Aircraft played a significant role in reconnaissance, bombing, and aerial combat during the war.