History Channel - World War I The Great War (2009) Part 4 Secrets of World War I

HISTORY is proud to present the definitive collection of documentary programs on World War One. Experience the world-changing events from the birth of what became known as The Great War to the tragic, final day where over 13,000 men died. From the first dogfighters and the Red Baron, to the battle of The Somme, John J. Pershing, The Iron General and the Last Day of WWI. In the four year period from 1914 - 1918, the war was responsible for over 40 million casualties and over 20 million deaths. Join the brave servicemen of land, sea, and air as they valiantly fought alongside their Allied brothers in this “war to end all wars.”

Part 4: Secrets of World War I

DECLASSIFIED: WORLD WAR I Experts discuss the political personalities and intolerance behind the “War to End All Wars.” Discover the history behind the first weapons of mass destruction, why they were created, and how they were made. Look at documents that were once classified for reasons of national security and discover why they were kept secret. We uncover the forgotten story of the secret deals government mistakes political intolerance and America's role in the war. We mine formerly guarded vaults and archives worldwide reviewing once top-secret footage and declassified materials to search for the facts behind the thrilling stories with which we've become familiar.

BBC - Western Front (1999) (Serie)