[4] Due to constant Ottoman incursions after the fall of Constantinople in 1453 and the flare-up of the war between the Ottoman Empire and Venice, the Slavic Catholic population of Dalmatia, where the Venetian power with its center in Zadar was consolidated at the beginning of the 15th century, massively joined the units of the Venetian navy, including the naval infantry corps.

The naval infantry of the Venetian navy or Fanti da Mar were organized as far back as 1202 during the Fourth Crusade when they were the key to the conquest of Zadar and later Constantinople.

The Bailo of Negroponte, Paolo Erizzo, had under his command, in addition to the Venetian and Greek troops, a contingent of naval infantry from Dalmatia.

They joined the battle on January 26, 1571, under the command of Captain Gianantonio Querini and formed a contingent of foot soldiers who broke through the Ottoman blockade on Venetian galleys and arrived in besieged Famagusta.

The heroic resistance of Famagusta gave the Christian forces enough time, keeping the huge Ottoman fleet occupied, to gather and organize.

[6] After the defense of Šibenik, about 2,000 oltramarini took part in the liberation of the Dalmatian fortresses of Novigrad, Karin, Obrovac and Vrana.

Zuanne Radoš from Trogir especially stood out in these battles as one of the commanders (superintendents) of the oltramarini, who will be awarded the Order of the Knights of St. Mark for his bravery in these battles.In 1648, on the southern battlefield, a large Venetian army under the command of Don Stipan Sorić, consisting of 3,000 oltramarini , 2,000 Swiss, 600 cavalry, 200 dragoons and about 1,000 cernide (under the leadership of Vuk Mandušić) liberated Drniš and Klis.

During the siege, 70,000 Turks, 38,000 Cretan serfs, as well as 29,088 Christian defenders of the city, including sailors and soldiers from Dalmatia and Istria, died from disease and fighting.

The city of Kalamata fell on September 14 after the Dalmatian-German forces under Colonel von Degenfeld defeat the strong garrison of the Ottoman general Kapudan Pasha.

As the professional army of Venice in Dalmatia, regiments of oltramarini and their cavalry counterparts croati a cavallo, with the support of the local irregular units; cernide and orthodox morlachs , successfully liberated Sinj and Knin.

In Dalmatia in 1715 they participated in heroic defense of Sinj, where 4 companies from the Corponese regiment together with local militia (cernide) and professional Italian units fought off Turkish assaults.

On August 19, 800 Dalmatians reinforced by company of elite Venetian grenadiers under personal command of colonel Kumbat charged the Janissary positions on Fort Scarpone.

The "peaceful" French occupation of the Venetian cities did not go smoothly, and soon anti-Jacobin rebellions began, the most significant of which was in Verona.

In order to calm the situation in the city, the senate sends Medin regiment of the oltramarini, but the exact opposite happens.

[13] As the last proof of loyalty to the Venetian Republic, thousands of Dalmatian oltramarini and sailors were the last armed force willing to fight to the end for Venice.

When 4,000 French soldiers entered the city, the oltramarini refused to hand over their weapons and regimental flags and shouted the centuries-old military cry "viva san marco" with shots in the air as they boarded the ships that were supposed to take them to their homeland.