Austria-Hungary is a member of the Central Powers, and is Germany's main ally. It was founded when Austria and Hungary united together in the Austro-Hungarian Compromise of 1867. Today, they exist as the United Balkan Nation. They are a world power, and they have the third largest military in the world.
The First Great War
In 1914, Russia invaded Austria-Hungary. However, the Austro-Hungarians could fight back, and the Russians were forced to retreat. The next year, Austria-Hungary, Germany, and the Ottomans all launch major offensives into Russia, helping cause a collapse as more and more resources were either destroyed, captured, or went to the war effort, helping cause massive inflation. The First Russian Revolution began the next year, and it soon turned into a civil war. With the Eastern Front over, Austria-Hungary went on to invade Serbia. In 1917, Serbia had fallen, as long as most of the other nations in the East. The next year, an invasion of Italy began, and with Germany helping Italy quickly fell. All of the Balkans were secured by Austria-Hungary and Bulgaria by 1918, except for Greece. In 1919, a peace treaty was signed between the Allies and the Central Powers, finally ending the war. Austria-Hungary, as well as Germany gained large amounts of land.
After the war, the economy grew greatly. However, Serbian resistance fighters continue to fight against the new government in Serbia and vows to restore the Serbian state. Troops were sent to Bulgaria to help with the revolts there. Relations with Germany were very good. They often allowed industrial companies to compete in each other nations, they often allowed movies from both nations to be played in both nations without many restrictions, and were for a while the only members of the Central Powers. The Austro-Hungarians had their own car company, Austro-Daimler, and this car company often competed with Germany's Volkswagen. The 20s were a quiet period for Austria-Hungary, except for minority revolts and Italian independence.
The start of the Second Great War.
The early 30s were not a good time for most nations. It often threatened the peace of many nations. In 1934, Germany decided to strike first. A large army invaded the UCS with the goal of capturing Moscow. Austria-Hungary, meanwhile, decided to focus on the southern front and invaded Bulgaria. They were only stopped when Turkish troops arrived. They, however, fell the next year. Austro-Hungarian troops were now mainly used in the Eastern front, helping defeat the Russians, while in the South they mainly just made sure the Turkish couldn't get into Bulgaria. In 1937, the nation of Austria-Hungary was officially over, and the United Balkan Nation was proclaimed. Austria-Hungary officially ceased to exist, and lasted from 1867-1937.