Chemical Weapons Go Back to Artillery 18 cm GaswerferThe 18 cm Gaswerfer was a German World War I chemical mortar designed to deliver gas shells. It featured a smoothbore design and fired gas projectiles at relatively short ranges. Its primary role was to disperse toxic agents during trench warfare.Livens ProjectorThe Livens Projector was a simple, trench-based mortar used in World War I to launch gas or incendiary shells. It consisted of a steel tube buried in the ground, capable of firing large projectiles over short ranges. Its design allowed for massed barrages, saturating enemy lines with chemical agents.