The purpose of these new weapons is not to kill the opponent, but to injure him. An injured soldier takes up more time for care than a dead soldier. Another novelty is the flame-thrower, a frightening weapon that the Germans use for the first time in the summer of 1915. The flame reaches heights of 10 to 30 meters and throws the soldiers into a panic. You can see a flame-thrower on the left, below the gas masks. Another new weapon is the tank. In 1915 both the Brits and the French are working in secret on an armoured vehicle on caterpillar tracks. To keep the project secret, the machines are described as "water tanks", a name still currently used. In this room, you see the 6-pounder canon of a British male tank. Male tanks have two canons, female tanks only have machine guns. In the small display case, you can see a peculiar apparatus with something that looks like a telephone receiver. The Horchgerät Waeztmann is a type of monitoring equipment used to detect the enemy's excavations. With tunnels, the enemies try to undermine each other's positions and blow them up. This equipment works as a sort of stethoscope. It can pinpoint vibrations of underground digging.