Oruç Reis in the context of "Reis (military rank)"

A period of Albanian piracy (Albanian: Piratëria shqiptare) occurred from the 15th to the 19th centuries, during which Albanian pirates plundered and raided ships. These pirates were based mainly in Ulcinj, but were also found in Bar and Ragusa (now Dubrovnik), and had connections with North Africa.

They plundered European ships mainly for the Ottoman Empire, disrupting the Mediterranean economy and forcing European powers to intervene. Some of the pirate leaders from Ulcinj, such as Lika Ceni and Hadji Alia, were well-known during this period. The Porte gave the name "name-i hümayun" ("imperial letters"), bilateral agreements to settle armed conflicts. The Ottoman Empire was also known to hire these pirates during periods of war. Some of the most famous barbary pirates of the Mediterranean Sea were the Ottoman Barbarossa brothers Oruç and Arnaut Mami.

Hayreddin Barbarossa (Arabic: خير الدين بربروس, romanized: Khayr al-Dīn Barbarūs; Turkish: Barbaros Hayrettin Paşa), also known as Hayreddin Pasha, Hızır Hayrettin Pasha, and simply Hızır Reis (c. 1466/1483 – 4 July 1546), was an Ottoman corsair and later admiral of the Ottoman Navy. Barbarossa's naval victories secured Ottoman dominance over the Mediterranean during the mid-16th century.

Born on Lesbos, Khizr began his naval career as a corsair under his elder brother Oruç Reis. In 1516, the brothers captured Algiers from Spain, with Oruç declaring himself Sultan. Following Oruç's death in 1518, Khizr inherited his brother's nickname, "Barbarossa" ("Redbeard" in Italian). He also received the honorary name Hayreddin (from Arabic Khayr ad-Din, "goodness of the faith" or "best of the faith"). In 1529, Barbarossa took the Peñón of Algiers from the Spaniards.

The capture of Algiers in 1516 was accomplished by the brothers Oruç and Hayreddin Barbarossa against Sālim al-Tūmī, the ruler of the city of Algiers, which was followed by an unsuccessful military campaign by the Spanish Empire and the Sheikh of Ténès to overthrow the newly formed Sultanate of Algiers.