At the same time the First World grenade became the ancestors of the barrel and mounted grenade launchers end of XX century., Embodied similar ideas (in Vol. H. "Jumping" grenades) for similar purposes, but with new technologies and materials. For throwing shells into the enemy trenches were used even catapult and trebuchet, in Antiquity and the Middle Ages. By the middle of 1915 on the Western Front was about 750 catapults and mortars. For example, Claude Leach catapult that was used in the Dardanelles operation, was an enlarged copy of a slingshot, metal pound load to 200 m at a cost of less than 7 pounds. Catapult The Captain Wicks razrabotalBaby, shoot for about 100 m, and Captain West (West) - version of the ancient kamnemeta. Some French catapult used for tensioning bicycle transmission chain and pedals, while others were a half meter elastic arm in a hole the same depth. In the best conditions catapult projectile overcame 75 meters in 4.25 seconds, a record was shot in the 300 meters in less than 5 seconds. As noted by the Australians, trench catapult with a weight of 50 pounds (about 25 kg), a length of about 3.5 meters and cost 12 pounds allowed with proper training to throw two of the three grenades in the meter trench 120 yards (just over 100 m). Despite the relatively long flight, which gave the enemy time to hide, and rapid loss of elasticity, and the catapult had a clear advantage over conventional artillery - quiet operation. However, not all share the optimism of the creators. For example, Guy Chapman in 1915, believed that in practice rather catapults capable launch a projectile into the air, where he fell on the heads of the calculation, or behead a careless soldier, leaning too close to their mechanism. Therefore, in 1916, with the advent of more sophisticated weapons from the catapults began to gradually give up.