The complicante factor of this situation is that the Serbia, that also placed itself in the Balkans defended the unification of the Slavic peoples of this region, that obviously searched the support of the Russia Mother to reach this end 6. But against point of this situation they were the intentions of the Austrohungarian empire in the region. In 1914, the heir of this empire was divulging personally its intentions for the region for when he assumed the throne, the intentions they were: to consolidate a composed empire for Austria, Hungria and the Slavic peoples of the region. But with the arrival of the prince in the region to display its ideas, it was died for the integrant ones of an organization that defended the integration of the Bsnia the Serbia 7. With this incident, Austria, that had alliances with Germany, demanded the immediate verification of the facts for the Serbia, however Austria did not have a satisfactory reply, and with this war against the Serbia, that also had its alliances, more necessarily with Russia was declared. Of this form the two alliances, the Entente Cordiale and the Trplice Alliance had been involved in the conflict. At the beginning of the conflict, all found that this war would be of short duration and had to this two fronts of battle had been consolidated: the Occidental person (where they fought the Germans against the English and Frenchmen) and the eastern front (where they fought Germans, Austrians and Russians). In the Eastern front Germany if came across with the amount of Russian soldiers, that it made with that the German armament superiority practically was annulled. In the front occidental person, the conflict finished being stanches, due the heavy artillery of both the parts, of this form the litigation if it directed for what we call ' ' war of trincheiras' ' , thus disabling advance of any one of the parts.