This is World War One as you’ve never seen it before. It seems unbelievable but there are thousands of 3D photographs taken of the First World War, yet none of them have ever been shown on TV in their original format. This fourth episode through the aid of these remarkable 3d photographs, looks at the final year of the conflict – 1918. After lengthy stalemate in the trenches, the Western Front suddenly exploded into life. Germany risked everything with one final push for victory .But the Allies fought back. And, after four years of playing catch up, British tactics and technology finally defeated the German war machine. This is the story of how we finally won the First World War.

• Max Hastings
• Catrine Clay
• Andrew Robertshaw