The history of the Cossacks spans several centuries.
Occhiali was an Italian farmer, then Ottoman privateer and admiral, who later became beylerbey of the Regency of Algiers, and finally Grand Admiral of the Ottoman fleet in the 16th century.
The Azov campaigns of 1695–1696, were two Russian military campaigns during the Russo-Turkish War of 1686–1700, led by Peter the Great and aimed at capturing the Turkish fortress of Azov with the aim of controlling the southern mouth of the Don River gaining access to the Sea of Azov and entrance to the Black Sea. Despite stubborn resistance and heavy casualties, the Russians under General Sheremetev after a failed siege in 1695 managed to capture the fort, accompanied by a naval force, in July 1696, marking the first major Russian victory against the Turks.
The Russo-Turkish War of 1676–1681, a war between the Tsardom of Russia and Ottoman Empire, caused by Turkish expansionism in the second half of the 17th century.
The Crimean Khanate self-defined as the Throne of Crimea and Desht-i Kipchak and in old European historiography and geography known as Little Tartary, was a Crimean Tatar state existing from 1441–1783, the longest-lived of the Turkic khanates that succeeded the empire of the Golden Horde. Established by Hacı I Giray in 1441, it was regarded as the direct heir to the Golden Horde and to Desht-i-Kipchak.
The Zaporozhian Sich was a semi-autonomous polity and proto-state of Cossacks that existed between the 16th to 18th centuries, including as an autonomous stratocratic state within the Cossack Hetmanate for over a hundred years, centred around the region now home to the Kakhovka Reservoir and spanning the lower Dnieper river in Ukraine. In different periods the area came under the sovereignty of the Polish–Lithuanian Commonwealth, the Ottoman Empire, the Tsardom of Russia, and the Russian Empire.
Petro Konashevych-Sahaidachny was a political and civic leader, who was a Hetman of Ukrainian Cossacks from 1616 to 1622. During his tenure, he transformed Zaporozhian Cossacks from irregular military troops into a regular army and improved relations between the Cossacks, the Orthodox clergy and peasants of Ukraine, which would later contribute to the establishment of a modern Ukrainian national consciousness. A military leader of the Polish–Lithuanian Commonwealth both on land and sea, Sahaidachny is best known for the significant role his troops played in the Battle of Khotyn against the Ottoman Empire in 1621, as well as the Polish Prince Władysław IV Vasa's attempt to usurp the Russian throne in 1618.
The Moldavian Magnate Wars, or Moldavian Ventures, refer to the period at the end of the 16th century and the beginning of the 17th century when the magnates of the Polish–Lithuanian Commonwealth intervened in the affairs of Moldavia, clashing with the Habsburgs and the Ottoman Empire for domination and influence over the principality.
The Nogai Horde was a confederation founded by the Nogais that occupied the Pontic–Caspian steppe from about 1500 until they were pushed west by the Kalmyks and south by the Russians in the 17th century. The Mongol tribe called the Manghuds constituted a core of the Nogai Horde.
The Russo-Crimean Wars were fought between the forces of the Tsardom of Russia and the Crimean Khanate during the 16th century over the region around the Volga River.
The Ottoman Navy or The Imperial Navy, also known as the Ottoman Fleet, was the naval warfare arm of the Ottoman Empire. It was established after the Ottomans first reached the sea in 1323 by capturing Praenetos, the site of the first Ottoman naval shipyard and the nucleus of the future navy.
Khan Temir was a steppe warlord and raider. He ruled the Budjak Horde in what is now the southwestern corner of Ukraine (Budjak) along the Romanian border. Budjak is the southwesternmost corner of the Eurasian Steppe. He raided mostly along the eastern frontier of the Polish Commonwealth. Nominally a vassal of the Ottoman Empire, the Ottomans used him to pressure the Poles just as the Poles used the Zaporozhian Cossacks to pressure the Ottomans and Crimeans. His habit of acting independently caused problems. The Ottomans several times tried to move him east from Poland and eventually executed him. The most important event in his life was his conflict with the Crimean khan in 1628.
The Wild Fields is a historical term used in the Polish–Lithuanian documents of the 16th to 18th centuries to refer to the Pontic steppe in the territory of present-day Eastern and Southern Ukraine and Western Russia, north of the Black Sea and Azov Sea. It was the traditional name for the Black Sea steppes in the 16th and 17th centuries. In a narrow sense, it is the historical name for the demarcated and sparsely populated Black Sea steppes between the middle and lower reaches of the Dniester in the west, the lower reaches of the Don and the Siverskyi Donets in the east, from the left tributary of the Dnipro — Samara, and the upper reaches of the Southern Bug — Syniukha and Ingul in the north, to the Black and Azov Seas and Crimea in the south.
The steppe and forest-steppe of Ukraine and southern Russia is good agricultural land, but it was traditionally held by pastoral nomads. Any state that could drive off the nomads and fill the land with tax-paying peasants would expand its power enormously. During the period 1500–1800, this region was taken under Russian control.
Damat Halil Pasha, also known as Khalil Pasha, was an Ottoman Armenian statesman. He was grand vizier of the Ottoman Empire in 1616–1619 and 1626–1628. He also served in the Ottoman Navy, and led a number of attacks including the Raid of Żejtun in Malta in 1614.
Ottoman Ukraine, Khan Ukraine, Hanshchyna is a historical term for right-bank Ukraine, also known by its Turkic name Yedisan. The first recorded use of the term Khanska Ukraina are traced to 1737 when the Russian secret-agent Lupul urged Empress Anna of Russia to attack Ottoman Ukraine.
Crimean–Nogai slave raids in Eastern Europe were the slave raids, for over three centuries, conducted by the military of the Crimean Khanate and the Nogai Horde primarily in lands controlled by Russia and Poland-Lithuania as well as other territories, often under the sponsorship of the Ottoman Empire.
Mehmed III Giray was a khan of the Crimean Khanate. Much of his life was spent in conflict with nearly everyone around him. Part of the trouble was caused by his over-aggressive brother Shahin Giray. His reign was marked by an unsuccessful Turkish attempt to expel him and by the first treaty between Crimea and the Zaporozhian Cossacks. He was driven out by the Turks in 1628 and died trying to regain his throne.
Cossack raids to Istanbul (1624) were campaigns of Zaporozhian Cossacks, headed by hetman Mykhailo Doroshenko, to Istanbul, then the capital of the Ottoman Empire.
Canibek or Janibek Giray was twice khan of the Crimean Khanate. During his first reign he fought for the Turks in Persia and Poland. He proved a poor commander and had difficulty making his men obey. He was removed by the Turks in 1623. In the following year the Turks tried to restore him and failed. During his second reign there were raids on Poland and Russia. The Turks again removed him and he died in exile.
Zaporozhian Cossacks 
Ottoman Empire