Weapons of war
This weapon could fire hundreds of bullets per minute.
machine gun
Soldiers dug these for protection from enemy fire.
trenches
These animals spread disease and fed on waste and human remains in trenches.
rates
Britain, France and Russia formed this alliance before the war.
Triple Entente
This animal is the largest mammal on Earth.
blue whale
This armoured vehicle was designed to cross trenches and crush barbed wire.
tank
This was the dangerous open area between opposing trenches.
No mans land
Constant bombardment could cause this psychological condition in soldiers.
shell shock
Germany, Austria-Hungary and the Ottoman Empire fought as part of this alliance.
Central Powers
This ocean lies between Africa, Asia and Australia.
Indian Ocean
Soldiers wore gas masks to protect themselves from this weapon.
poison gas
This defensive obstacle trapped advancing soldiers and exposed them to machine-gun fire.
barbed wire
This trench illness was caused by standing in cold and wet conditions for long periods.
trench foot
Australia entered World War I because it was part of this empire.
British Empire
This Australian city hosted the 2000 Summer Olympics.
Sydney
This weapon fired explosive shells over long distances and caused many battlefield casualties.
artillery
This term describes a situation where neither army can make significant progress.
stalemate
These initials stand for the Australian and New Zealand Army Corps.
ANZAC
This country joined the Allied side in 1917.
United States
This artist painted the Mona Lisa.
Leonardo da Vinci
Chlorine, phosgene and mustard were three examples of this type of weapon.
chemical weapons
Aircraft first carried out this task by observing enemy positions from above.
reconnaissance
Australian and New Zealand soldiers landed here on 25 April 1915.
Gallipoli
This country left the war following the Russian Revolution.
Russia
This is the smallest prime number.
2