Tanks
Tanks were used for the first time in the First World War at the Battle of the Somme. They were developed to cope with the conditions on the Western Front. The first tank was called 'Little Willie' and needed a crew of 3. Its maximum speed was 3mph and it could not cross trenches.
The more modern tank was not developed until just before the end of the war. It could carry 10 men, had a revolving turret and could reach 4mph.
The development of tanks in World War I began as a solution to the stalemate which trench warfare had brought to the western front. The first prototype of the Mark I tank was tested for the British Army on September 8th 1915. Although initially termed "land ships" by the British Army, (then shortened to "tanks")