1. Course of WWI

2. Course of WWI short war illusion Schlieffen Plan: avoid 2-front war
western front vs. eastern front
trench warfare = stalemate

3. Schlieffen Plan – August, 1914

4. Schlieffen Plan – September, 1914

5. Trench Warfare

6. A British soldier inside a trench.
Trenches
A British soldier inside a trench.

7. Battles to Know Marne Somme & Verdun 1st trenches bloody
little ground gained

8. Why did the US enter the war in 1917?
Germany’s unrestricted submarine warfare
1915: sinking of Lusitania
: halted
1917: resumed
Zimmermann Telegram
Germany offered Mexico US territory if they joined the German cause

9. Why was WWI so destructive?
trench warfare
new technologies:
tank
poison gas
machine gun
airplane
submarine

10. Verdun: Before & After
Cloister of the Hotel la Princerie (France) – before and after the battle.

11. Tank 1916: tank warfare introduced by France/GB
1917: France & GB used 1500 tanks each
A German tank.

12. Poison Gas German soldiers wearing gas masks.
The Germans introduced the use of poison gas in warfare in 1915.

13. Machine Gun

14. Below: A German airplane.
Above: Painting of a British airplane engaged in combat. The airplane has a machine gun mounted on its top wing.

15. Snoopy, the WWI Flying Ace

16. Submarine
A German U-boat, 1910.