 The JNA Knin Corps, which had already fully mobilised and deployed, started the campaign in northern Dalmatia and southern Lika on 16 September 1991. It captured Drniš on 18 September, but sustained defeats at Pakovo Selo two days later and near Šibenik on 22 September as it attempted to capture the city. After this defeat, the Corps ceased its attacks, except for those around Gospić in Lika, for the rest of the month. Five days after the JNA and the Serbian Guard paramilitaries lost their positions in the city on 22 September, the Knin Corps captured Lovinac. JNA troops assembling near the southern tip of Croatia in the Dubrovnik hinterland consisted of elements of the Užice and Titograd Corps. They had not advanced onto Croatian soil by the end of September because of mobilisation problems in Bosnia and Herzegovina. In Banovina, the JNA captured Petrinja on 21 September, but failed to make further progress. Because of the failure of JNA mobilisation, the planned campaign in Kordun was limited to the consolidation of positions held around Karlovac. On 15 September, the Yugoslav Navy blockaded the Croatian Adriatic ports of Pula, Rijeka, Zadar, Split and Dubrovnik for a week.
