It changed the course of the First World War.

A British tank makes its way to the front ... Beaumont-Hamel during the Battle of the Somme, 1916. The British had analysed the failings of the first day of attack and had implemented the use ...

When British-designed tanks arrived at the Battle of the Somme in World War I ... Philip Neame said his brigade wielded one of the very first tanks: "Everybody was staggered to see this ...

The blueprint for the world's first tank has been bought at auction ... They date to May 1916, just four months before the tank took part in the Somme Offensive in World War One.

Read more: 14 Best Fighter Planes And Jets Of All Time The first combat tank in the world, the British-built Mark I, went ...