General von Falkenhayn, co-operating with von Mackensen, smashed his way through Vulkan Pass, and cut the main line running to Bucharest at Craiova. The Dobrudja region was over-run and the central Roumanian plain was swept clear of all Roumanian opposition to the German advance.
On the same day a Rumanian official report gave a long list of villages and towns which the Rumanians had taken beyond the frontier, their Fourth Army Corps also having taken 740 prisoners. Within two days Averescu had advanced so rapidly that he was in possession of Petroseny, north of the Vulkan Pass, and of Brasso, beyond Predeal Pass.
On the 21st a Berlin dispatch announced that the Teutonic forces had carried the Vulkan Pass and cleared it of the enemy. On the following day, however, the Rumanians were still fighting at this point and three days later forced the Teutons back and reconquered the lost territory, as well as the neighboring Szurduk Pass.
On September 26, 1916, the Germans began their first really serious advance, the point of attack falling on the Rumanians near Hermannstadt, about fifty miles northeast of Vulkan Pass. For three days the Rumanians made a heroic resistance against a great superiority in men and heavy cannon on the part of the enemy.
Only ten miles farther south, over high, rolling ground, was Campulung, the terminus of a railroad running directly into Bucharest, only ninety miles distant. But Falkenhayn made no further progress that day. In the neighboring passes he was held back successfully while his left flank in the Oitoz Pass and his right flank in the Vulkan Pass were each thrown back.
On November 5, 1916, the Germans regained Rosca heights, which the Rumanians had taken on the 3d. On the 7th the Russians were pressing the Germans hard below Dorna Vatra, while southeast of Red Tower Pass and near the Vulkan Pass the Rumanians suffered reverses, losing a thousand men as prisoners, according to the Vienna and Berlin dispatches.