Francis Ferdinand and his wife were assassinated by members of the black hand sparking the whole war.
The Russian army was decisively defeated while in German territory.
The German Advance was halted a short way from Paris in this battle.
The Russians were defeated and were no longer a major threat in the war.
The Italians betray their allies and attack Austria.
The German forces attacked and sank a British ship that had about 100 Americans aboard.
Germany, Austria-Hungary and Bulgaria join forces and attack Serbia effectively eliminating them.
Airplanes are first used in battle with the pilots flying and shooting pistols at each other.
Morale at home is beginning to crack so countries make new laws to arrest traitor and censor newspapers.
Millions of men died in the elusive search for a breakthrough during trench warfare.
This was a naval battle between Germans and British where there was the only direct naval battle took place, and neither side won a conclusive victory.
German military convinces the emperor to restart unrestricted submarine warfare, and the emperor agrees reluctantly.
The United States joined the war because the Germans restarted their unrestricted submarine operations.
United States troops arrive in large numbers to begin fighting in Europe.
650,000 women were fired in place of men who returned home.