1. World War I The Principal Combatants Allied Powers Great Britain France Russia Japan (1914) Italy (1915) USA (1917) Central Powers Germany Austria-Hungary Turkey (1914) Bulgaria (1915)

2. August 1914 Germany faced with a two-front war Must quickly eliminate France, then face Russia The Schlieffen Plan Swift attack through neutral Belgium Sweep around Paris from the north, encircle the city Shift forces to the east to deal with Russia The Schlieffen Plan

3. The Battle of Tannenberg August 26-29, 1914 1st major battle on the Eastern Front German victory Result of premature Russian invasion of Germany However, it did divert German forces from the Western Front, enabling the Allies to halt the German advance on Paris German General Paul von Hindenburg

4. Battle of the Marne September 6-12, 1914 1st major battle on the Western Front German advance halted; Schlieffen plan thwarted Stalemate on the Western Front for the next 4 years Trench warfare Taxicabs from Paris rush troops to the front in August 1914

5. Trench Warfare

7. No man’s land, Western Front

8. New Weapons Poison gas Machine guns Tanks Airplanes Submarines

9. Poison Gas

11. Machine Gun Vickers machine gun German Maxim gun

12. Bolt Action Rifles

13. Mannlicher-Carcano

14. Landmines

15. Flame Throwers

16. German u-boat at sea, 1916

17. Heavy Artillery

18. Paris Gun Used by Germans to bomb Paris Range 75 miles 15 minutes to load Re-bored after 60 firings

19. Tanks British Mark ICrossing a Trench Stuck in a TrenchFrench Renault Light Tank

20. Aerial Warfare

22. Sopwith Camel Biplane Sopwith Camel

23. Manfred von Richthofen The Red Baron

24. Fokker Dr.I Triplane - Germany

25. Eddie Rickenbacker

26. Spad S XIII

27. A German U-boat

28. U Boat