1. 1914: To Arms

2. 1915: Death in Foreign Fields

4. 1917: The Breaking of Armies

5. 1918: Germany's Last Gamble

6. Technology: Air Power

7. Technology: Land Warfare

Artillery had changed out of all recognition and the killing power of the machine gun soon rendered the vestiges of 19th Century warfare redundant. The problem was that tactics had not developed to make best use of the new technologies resulting in wholesale slaughter on the Western Front. A new terror weapon emerged in the form of gas which was first used by the Germans on the Eastern Front.

8. Technology: Sea Power