On 6 August the offensive was launched against
Gorizia. The attack was concentrated in two zones: the hilly area west of the
Soča river near Gorizia and the westernmost edge of the
Karst Plateau near
Doberdò del Lago (). Italians managed to conquer the main transport road leading from
Duino to Gorizia in the
Battle of Doberdò after bloody hand-to-hand combat, thus securing their advance to Gorizia from the south. Austro-Hungarian forces had to retreat on the line east of Gorizia (Mount
Škabrijel), leaving the heavily damaged town to Italians. Bombardment of Gorizia was extremely heavy and effective. Borojević unsuccessfully asked for reinforcements. In the afternoon Cadorna ordered the 45th division to attack Sabotin. Italian infantry with support of heavy artillery reached the peak in less than an hour. Simultaneously the attack on Monte San Michele also commenced. Italian infantry successfully reached the summit while Austro-Hungarian soldiers retreated waiting for a later counterattack. In the absence of reserve forces, which had been deployed to Sabotin, that counterattack failed. With the conquest of Sabotin and Monte San Michele, the previously strong Austro-Hungarian defensive line around Gorizia rapidly disintegrated. Later that night Italians also captured Monte Calvario. On 8 August the last Austro-Hungarian regiment from right bank of Soča River withdrew to the east. The first platoons of the Pavia Brigade began to enter the city. Gorizia fell to Cadorna and a bridgehead was finally established across the
Soča River. Austro-Hungarians shifted troops to the Gorizia sector to prevent a breakthrough. Borojević had already ordered his men to retreat further to the east into Vallone Valley north of
Monfalcone () thus abandoning strategic positions on the western
Carso such as Monte Sei Busi, the zone around Doberdò del Lago and Monte Cosich to the north of Monfalcone. Austro-Hungarian defenses in the north and east of Gorizia still included an uninterrupted series of heights – including ridges from Sveta gora (),
Škabrijel (), Sveti Danijel (, and Hill 383. Austro-Hungarian artillery and artillery observatories were, placed on these peaks after the fall of Gorizia. These peaks had been prepared for defense purposes to block Italian offensives towards Trieste and Vienna. The new Austro-Hungarian front line now passed from Nad Logom (Hill 212), Hill 187 (near Devetachi, ), Opacchiasella (), Nova Vas (), Hill 208, Hill 144 and Hill 77 from north to south. Austro-Hungarian troops engaged the Italians in a series of heavy defensive firefights. With the bridgehead being established, capturing Gorizia and the western Karst, and having suffered heavy losses, Cadorna ended the offensive on 17 August. The attack on Gorizia was the most successful Italian offensive along the Isonzo and greatly boosted Italian morale - especially since Gorizia had been promoted as a desirable objective, unattainable in earlier battles. Italy finally declared war against
Germany on 28 August. . ==See also==