{{army units A divizion (dywizjon) (a word in several European languages, mostly Slavic) is a

military unit Military organization or military organisation is the structuring of the armed forces of a state so as to offer such military capability as a national defense policy may require. In some countries paramilitary forces are included in a nation' ...

in some armed branches, usually

artillery Artillery is a class of heavy military ranged weapons that launch munitions far beyond the range and power of infantry firearms. Early artillery development focused on the ability to breach defensive walls and fortifications during siege ...

and

cavalry Historically, cavalry (from the French word ''cavalerie'', itself derived from "cheval" meaning "horse") are soldiers or warriors who fight mounted on horseback. Cavalry were the most mobile of the combat arms, operating as light cavalry ...

, being an equivalent of

battalion A battalion is a military unit, typically consisting of 300 to 1,200 soldiers commanded by a lieutenant colonel, and subdivided into a number of companies (usually each commanded by a major or a captain). In some countries, battalions are ...

. It should be distinguished from

division Division or divider may refer to: Mathematics *Division (mathematics), the inverse of multiplication *Division algorithm, a method for computing the result of mathematical division Military *Division (military), a formation typically consisting ...

, which is a larger

formation Formation may refer to: Linguistics * Back-formation, the process of creating a new lexeme by removing or affixes * Word formation, the creation of a new word by adding affixes Mathematics and science * Cave formation or speleothem, a secondar ...

. The same word is used in some of these languages for a group of naval vessels (a

in naval usage).

Usage

* Russia / USSR: ''divizion'' (дивизион) is an artillery(also anti-aircraft and surface-to-air missile artillery) or cavalry battalion, and also a group of naval vessels. It was also used in relation to air force units and armoured train units. (An equivalent of a division is ''divizya'' (дивизия) in Russian.) * Poland: ''dywizjon'' is an artillery or cavalry battalion, including armoured cavalry, and also a group of naval vessels. It was also used in relation to air force units (e.g. "dywizjon 303" - "303 squadron" in RAF during WW II) and armoured train units. An equivalent of a division is ''dywizja'' in Polish.) * Yugoslavia and successor countries: term ''divizion'' or дивизион (also spelled "divizijun") is used instead of battalion in artillery and anti-aircraft artillery branch but also for naval units of battalion, regiment or brigade size. Croatian Army at some point stopped using term "divizijun" in artillery and anti-aircraft artillery and the same term as in other branches is used instead ("bojna" i.e. "battalion"). Term "divizijun" is still used in Croatian Navy and has an equivalent of a non-commonwealth regiment. (An equivalent of English term "division" is ''divizija'' or дивизија in Serbo-Croatian.) * Bulgaria: ''divizion'' (дивизион) is an artillery or rocket artillery battalion, and also a group of naval vessels. (An equivalent of a division is ''divizya'' (дивизия) in Bulgarian.) Military units and formations by size