<p> New Weapons of World War I Graphic Organizer (28) Weapon Description Tanks – Armored chariot type weapon – Firepower, steel plates, and caterpillar tracks made it ideal for No Man’s Land – Became effective after 1917</p><p>Poison Gas – Key element in German attack at Ypres – Very unreliable because change in wind direction would send it back – Chlorine mustard and phosgene gases most widely used – Resulted in internal and external burning</p><p>Zeppelins – Blimps were used to fly high over enemy towns and drop bombs – German Zeppelins successfully bombed Britain on several occasions – Warfare against civilians became characteristic of warfare in the 20th century – Planes using fire producing bullets turned these hydrogen filled airships into raging infernos U-Boats – Submarine vessel; Germany had over 400 – Allied forces used depth charges, mines and Q-ships o Disguised as easy targets, however able to quickly attack U-Boat</p><p>Machine Guns – Accounted for most of the casualties in trench warfare – Closely packed advancing men (easy prey for hundreds of rounds per minute) – Made attacks on opposing trenches (with barbed wire) a suicide mission – Aerial Dog Fights- planes fitted with special mechanisms</p>