WW1: The Introduction of the Tank Best Full Documentary WW1: The Introduction of the Tank Best Full Documentary. Battle of Jutland - World War I (full . WW1: .\rbr\rbrTo the horror of the German soldiers observing their deployment and approach, the British unleashed a revolutionary new weapon, the tank, during a September .\rbr\rbrThe A7V was a tank introduced by Germany in 1918, during World War I. One hundred chassis were ordered in early 1918, ten to be finished as fighting vehicles .