Vicko like most Split residents supported the Kingdom of Serbia and was a fierce opponent of the Austria-Hungary empire which ruled Dalmatia with repression.

In 1920, after the Communists won a large number of the cities in the local elections, the government banned them from acting legally and they became a forbidden party.

When the Invasion of Yugoslavia began, Vicko urged party members to join the army and fight against the fascist and collaborators.

When it was clear that Yugoslavia was losing, the party members were told to hide as many weapons as possible for the upcoming armed guerilla resistance.

Vicko Krstulović later received a letter from the Central committee for Communist party of Croatia where he was blamed for the failure of those actions, but he replied that it was their fault.

The Central committee for Communist party of Croatia sent Rade Končar to help Krstulović organise another attempt of reaching the Dinara mountains.

Vicko knew the importance Serbian settlers in Dalmatia at that time because they made more than half of the Dalmatian partisans.

Vicko helped organise the partisan resistance in Bukovica which was near the Chetnik-Italian controlled area of Kninska Krajina.

[1] In July 1942, Vicko went to the mountain Cincar to attend a meeting with the Supreme HQ of the National liberation army of Yugoslavia and the commander in chief, Josip Broz Tito.

Josip Broz Tito along with the Supreme HQ decided to evacuate the entire area and cross the Neretva river.

[4] Vicko Krstulović and the 9th Dalmatian division were given a hard task to protect the flanks facing Jablanica and Neretva from the difficult and craggy terrain of Imotski and Biokovo.

The enemy used heavy aviation, tanks and artillery which gradually forced all 3 partisan brigades to slowly retreat to the right shore of the Neretva River.

While the 9th division was under critical pressure from the enemy and forced to stay in the hills above Neretva, they were still obligated by the orders of Tito and the HQ to take and move the Central hospital and heavy wounded through the mountain terrain of Dinara, Bikovo, Kamešnica and Dalmatia.

On 14 April 1943, the 9th Dalmatian division was disbanded in the Kifino village due to a big number of wounded and deceased fighters.

Vicko and the Supreme HQ went through the Durmitor massive between the Tara and Piva rivers in the mountainous areas of northern Montenegro.

[1] In the beginning of August 1943, Vicko was with Tito and the Supreme HQ at a party conference of the 1st Proleter brigade in Petrovo polje.

Vicko was determined to go back in Dalmatia along with the 1st and 2nd Dalmatian brigade because he knew that the Italians were collapsing after the Allied invasion of Sicily.

On 3 September 1943, the Armistice of Cassibile was signed and Italy capitulated, but the Italians were still holding Split and refused to surrender to the partisan forces.

On that day, Vicko and Ivo Lola Ribar started negotiating with general Becucci for the immediate handover of all weapons from the Italian army.

At that time, the Sixth Enemy Offensive was under way and the German forces were gradually coming closer to occupying the Dalmatian coast which was abandoned by the Italians.

The Germans were surrounded in Klis, Sinj and Dicmo but the partisan units were badly synchronised due to a lack of communication.

In October 1943, the 8th Dalmatian Corps took control of the 4th operational zone and Vicko was restricted to political work at ZAVNOH and AVNOJ.

On 29 November 1943, Vicko attended the famous 2nd AVNOJ meeting in Jajce where the National Committee for the Liberation of Yugoslavia was established.

The Germans used heavy artillery from Klis to slow them from the north but the Yugoslav Navy managed to offload reinforcements just east of Split.

The main assault began on 25 October and the partisan troops managed to defeat the German-Ustashe war machine in a day.

Vicko was later relieved of any important political duty after he made remarks that Tito and the other old guard officials should retire and leave the country to younger generations.

In September 1988, he was admitted to the Military hospital in Split for treatment but during a routine therapy session, the doctors used electrical equipment not knowing he had a pacemaker.

[8] After his death, his son Vladimir Krstulović gave all of Vicko's possessions and archives to the Historical museum in Belgrade.

During the long marches between those battles, his son Maksim fell off a horse and injured his arm which would leave permanent damage.

Maksim Krstulović became a painter and critical intellectual who wrote articles that were more to the left than the Yugoslav politics was at the time.