Could the FV4005 have changed history? With its massive 183mm cannon, this British tank had the potential to destroy Soviet ...

The completed vehicle was running by the end of 1915 but by then a new design was under construction and this would become the prototype for all British heavy tanks in the First World War.

During its Cold War heyday the Chieftain was the world’s best armored and armed main battle tank and reports say modernized versions may be heading to Ukraine. If so, Kyiv will want engine upgrades.

The completed vehicle was running by the end of 1915 but by then a new design was under construction and this would become the prototype for all British heavy tanks in the First World War.