The Austro-Hungarian First Army planned to attack Romanian positions along the Oituz valley, primarily using the Gerok Group, which had recently participated in the Battle of Mărăști.

The fortified Pravila peak, held by the Romanian 27th Dorobanṭi Regiment "Bacău", was assaulted four times by the Austro-Hungarian 70th Infantry Division, without result.

The German 117th Infantry division was more successful advancing 1 to 2 kilometres (0.62 to 1.24 miles) around Ungureanu peak and inflicting heavy losses on the 16th Dorobanṭi Regiment "Baia".

The following afternoon, however, the Central Powers attacked in force, taking Pravila peak and advancing near Coșna Hill [ro].

On 13 August another Romanian reinforcement, the Grăniceri (Border Guards) Brigade, attacked Central Powers positions south of the Oituz river, losing more than 800 men while gaining little ground.