The conflict opened up on Austrian - Hungarian invasion of Serbia, [10], [11], followed by the invasion of Belgium. Luxembourg, France and Germany. Germany and attack Russia.
The conflict begin to Austria-Hungary invaded Serbia [10] [11], followed by the invasion of Belgium and Luxembourg France Germany Germany attacks Russia and its.
When the conflict waged by Austria - Hungary invaded Serbia [10 [] 11 followed by the invasion of France, Belgium, Luxembourg, and Germany, and the Russian attack Germany.