My great grandfather has actually been through this (he did not make it), so I had a very emotional and personal attachment to this movie, as did so many Serbs, I am sure. It's based on a true event. I am not going to mark this as containing spoilers because it is based on what actually happened in history. So, these events are known, but I did not disclose the details of the movie itself.
In 1914, Serbia had expelled Austria-Hungary 3 times.
When Germany, Austria-Hungary, and Bulgaria did a combined attack against Serbia, the option to surrender was out of the question. The only way to temporarily retreat was south, over the rough, bitter cold Albanian mountains, where Serbia would connect to the Allies.
Eventually, the Serbian Army - what was left of it - made it to the Greek island of Corfu, where it recovered in a matter of months, then making the swift return home to liberate Serbia.
This episode in Serbian history is known as the Albanian Golgotha, and is the main focus of the movie. I loved the coronation scene in the beginning.
King Peter I of Serbia was a truly democratic ruler. He also translated John Stuart Mill's work "On Freedom" and is in Serbia known as King the Liberator. He is Serbia's most respected King and the only one in modern Serbian history to have been crowned.
This movie was the Serbian candidate for the Oscars, did not make it. If this were an episode in American history, and if it were an American movie, it would have won an Oscar.
The movie will be subtitled in several languages, so please see it if you can.