| "The Front" | the part of the battlefield where the armies meet and fight |
| Ace | A aircraft pilot who has destroyed at least five enemy aircraf |
| Allies | The group of countries fighting the war that were led by Britain and France |
| Austria-Hungary | an empire in Eastern Europe that was ruled from Vienna and Budapest |
| Balkans | area in southeastern Europe that includes Greece, Serbia, Romania, Croatia, etc. |
| Central Powers | Group of countries in the war that were led by Germany and Austria |
| Franz Ferdinand | The prince of Austria-Hungary who was to become the next Emperor |
| Gavrilo Princip | assassin who killed the heir to the monarchy of Austria-Hungary |
| Ottoman Empire | The sections of the middle east that were ruled by Turkey |
| Plan 17 | French plan to quickly defeat Germany |
| Sarajevo | city in Bosnia where a team of assassins killed Prince Ferdinand of Austria |
| Schlieffen Plan | a German plan to quickly attack and defeat France |
| Zimmerman Note | a secret note Germany sent to Mexico asking them to join the Central Powers |
| alliance | an agreement between countries to help each other in a war |
| armistice | an agreement between two sides to stop fighting |
| attrition | to wear out an enemy by continually attacking them and causing them losses |
| blockade | To cut an enemy country off from receiving outside trade |
| casualty | a soldier who has been killed, wounded, or gone missing |
| conscription | when a person is ordered to join a nation's military service |
| ethnic group | a large number of people who share religion, culture, language, or other characteristics. |
| foxhole | a small hole big enough for one soldier to hide in |
| mobilization | When a country calls in civilians to rejoin the army and prepare for war |
| morale | the spirit or mood of a person or group |
| nationalism | extreme patriotism and love of one's country |
| peace treaty | an agreement between two sides to make a permanent peace |
| propaganda | an extremely one-sided political presentation |
| sniper | an expert marksman who shoots at the enemy from a long distance hiding place |
| stalemate | a situation where neither side in a war can move forward or win victory |
| tank | a large armored vehicle invented to break through an enemy's trench system |
| trench | a ditch that soldiers dig and hide in for protection |
Drag corresponding items onto each other to make them disappear.
Start Game