Battles & Lines
Life in the Trenches
Weapons & Technology
Final Stages
The Basics
100

100: After retreating at the Battle of the Marne, Germans dug in, creating this type of warfare.

Answer: What is trench warfare?

100

A constant danger to feet, this disease was caused by standing in cold, wet, mud-filled trenches.

  • Answer: What is trench foot?
100

Although used earlier, this type of gas was notoriously released by Germany at Ypres in 1915.

  • Answer: What is chlorine gas?
100

The arrival of millions of troops from this country in 1917–18 helped turn the tide for the Allies.

  • Answer: What is the United States?
100

This 1914 plan was Germany’s blueprint for a quick victory by invading neutral Belgium to reach France.


  • Answer: What is the Schlieffen Plan?
200

This 1916 battle, lasting nearly 10 months, was designed to "bleed the French Army white".

  • Answer: What is the Battle of Verdun?
200

The dangerous, open area between opposing trench lines was known as this.

  • Answer: What is "No Man's Land"?
200

This weapon caused the highest number of casualties on the Western Front, leading to massive troop losses.

  • Answer: What is artillery/machine guns?
200

 This final German offensive in 1918 was an all-or-nothing attempt to win before American strength peaked.


  • Answer: What is the Spring Offensive (or Kaiserschlacht)?
200

This 1914 battle stopped the German advance near Paris and led to the "Race to the Sea."


  • Answer: What is the Battle of the Marne?
300

This five-month-long 1916 battle aimed to relieve pressure on Verdun and featured the first use of tanks.

  • Answer: What is the Battle of the Somme?
300

This psychological condition caused by the relentless stress of artillery bombardment was known as this.

  • Answer: What is shell shock?
300

First introduced by the British at the Somme, this weapon was designed to break the stalemate of trench warfare.

  • Answer: What is the tank?
300

The Allied counter-offensive that broke the German lines is known by this numerical name.


  • Answer: What is the Hundred Days Offensive?
300
  • This term describes the line of trenches that stretched from the Swiss border to the North Sea.
  • Answer: What is the Western Front?
400

 This German plan intended to bypass French border defenses by invading through neutral Belgium.

  • Answer: What is the Schlieffen Plan?
400

 Soldiers used this common, foul-smelling substance, sometimes whale oil, to prevent trench foot.

  • Answer: What is grease/whale oil?
400

This vehicle was used extensively for reconnaissance, but later for aerial combat and bombing.


  • Answer: What is the airplane?
400

 This agreement, signed in a railway carriage in Compiègne, ended the fighting on Nov 11, 1918.

  • Answer: What is the Armistice?
400

In 1916, this "meat grinder" battle lasted ten months and became a symbol of French determination.


  • Answer: What is the Battle of Verdun?
500

Nicknamed the "Race to the Sea," this 1914 battle saw both sides attempting to outflank each other to the coast.

  • Answer: What is the Battle of Ypres? 
500

This was the term for the daily morning/evening alertness drill soldiers performed in the trenches.

  • Answer: What is "Stand-to"? 
500

 This type of defensive barrier, often several rows deep, was built in front of trenches to stop infantry charges.


  • Answer: What is barbed wire?
500

This German general and his partner Hindenburg effectively ran the country as a military dictatorship by 1917.


  • Answer: Who is Erich Ludendorff?
500

 This British General, nicknamed "The Butcher," commanded the BEF during the Somme and Passchendaele.


  • Answer: Who is Douglas Haig?
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