The Romanians are continuing to push into Transylvania, hoping to create a Greater Romania on both sides of the Carpathian Mountains. The Austro-Hungarians in Transylvania are heavily outnumbered and unable to resist the onslaught. But things may not be going the Romanian way for much longer. The recently demoted Falkenhayn has been sent to Transylvania, together with German and Austro-Hungarian reinforcements. He is preparing a counter-stroke that he hopes will teach the Romanians the folly of entering the war on the side of the Allies.
Away from Transylvania problems are already beginning to materialise for the Romanians. Bulgarian troops, supported by Germans, have crossed the border and laid siege to the fortress of Turtucaia (known to the Bulgarians as Tutrakan). The Bulgarians hope to avenge the Romanians’ stab in the back in the Second Balkan War of 1913.
Romanian troops in Transylvania (Military Wiki)