Irregular military in the context of "Irregular warfare"

War is an armed conflict between the armed forces of states, or between governmental forces and armed groups that are organized under a certain command structure and have the capacity to sustain military operations, or between such organized groups.

It is generally characterized by widespread violence, destruction, and mortality, using regular or irregular military forces. Warfare refers to the common activities and characteristics of types of war, or of wars in general.

A regular army is the official army of a state or country (the official armed forces), contrasting with irregular forces, such as volunteer irregular militias, private armies, mercenaries, etc. A regular army usually has the following:

• a standing army, the permanent force of the regular army that is maintained under arms during peacetime.
• a military reserve force that can be mobilized when needed to expand the effectiveness of the regular army by complementing the standing army.

The Cossacks are a predominantly East Slavic, Eastern Christian people, originating from the Pontic–Caspian steppe of eastern Ukraine and southern Russia. Cossacks played an important role in defending the southern borders of Ukraine and Russia, countering the Crimean-Nogai raids, alongside economically developing steppe regions north of the Black Sea and around the Azov Sea. Historically, they were a semi-nomadic and semi-militarized people, who were allowed a great degree of self-governance in exchange for military service under the nominal suzerainty of various Eastern European states. Although numerous ethnic, linguistic and religious groups came together to form the Cossacks, most of them gradually coalesced and Slavicized, thereby adopting East Slavic culture, East Slavic languages and Eastern Orthodox Christianity.

The rulers of the Polish–Lithuanian Commonwealth and Russian Empire endowed Cossacks with certain special privileges in return for the military duty to serve in the irregular troops: Zaporozhian Cossacks were mostly infantry soldiers, using war wagons, while Don Cossacks were mostly cavalry soldiers. The various Cossack groups were organized along military lines, with large autonomous groups called hosts. Each host had a territory consisting of affiliated villages called stanitsas.

Prince Grigory Aleksandrovich Potemkin-Tauricheski (11 October [O.S. 30 September] 1739 – 16 October [O.S. 5 October] 1791) was a Russian military leader, statesman, nobleman, and favourite of Catherine the Great. He died during negotiations over the Treaty of Iași, which ended a war with the Ottoman Empire that he had overseen.

Potemkin was born into a family of middle-income landowners of Russian nobility. He first attracted Catherine's favor for helping in her 1762 coup, then distinguished himself as a military commander in the Russo-Turkish War (1768–1774). He became Catherine's lover, favorite and possibly her consort. After their passion cooled, he remained her lifelong friend and favored statesman. Catherine obtained for him the title of Prince of the Holy Roman Empire and gave him the title of Prince of the Russian Empire among many others: he was both a Grand Admiral and the head of all of Russia's land and irregular forces. Potemkin's achievements include the peaceful annexation of the Crimea (1783) and the successful second Russo-Turkish War (1787–1792), during which the armed forces under his command besieged Ochakov.

Guerrilla warfare is a type of unconventional warfare in which small groups of irregular military, such as rebels, partisans, paramilitary personnel or armed civilians, which may include children in the military, use ambushes, sabotage, terrorism, raids, petty warfare or hit-and-run tactics in a rebellion, in a violent conflict, in a war or in a civil war to fight against regular military, police or rival insurgent forces.

Although the term "guerrilla warfare" was coined in the context of the Peninsular War in the 19th century, the tactical methods of guerrilla warfare have long been in use. In the 6th century BC, Sun Tzu proposed the use of guerrilla-style tactics in The Art of War. The 3rd century BC Roman general Quintus Fabius Maximus Verrucosus is also credited with inventing many of the tactics of guerrilla warfare through what is today called the Fabian strategy, and in China Peng Yue is also often regarded as the inventor of guerrilla warfare. Guerrilla warfare has been used by various factions throughout history and is particularly associated with revolutionary movements and popular resistance against invading or occupying armies.

Belarusian resistance during World War II opposed Nazi Germany from 1941 until 1944. Byelorussia was one of the Soviet republics occupied following Operation Barbarossa. The term Belarusian partisans may refer to Soviet-formed irregular military groups fighting Germany, but has also been used to refer to the disparate independent groups who also fought as guerrillas at the time, including Jewish groups (such as the Bielski partisans and Fareynikte Partizaner Organisatsye), Polish groups (such as the Home Army), and nationalist Belarusian forces opposed to Germany.