A squadron was historically a cavalry subunit, a company or battalion-sized military formation. The term is still used to refer to modern cavalry units, and is also used by other arms and services (frequently aviation, also naval). In some countries, including Italy, the name of the battalion-level cavalry unit translates as "Squadron Group". United States In the modern United States Army, a squadron is an armored cavalry, air cavalry, or other reconnaissance unit whose organizational role parallels that of a battalion and is commanded by a lieutenant colonel. Prior to the revisions in the US Army structure in the 1880s, US Cavalry regiments were divided into companies, and the battalion was an administrative designation used only in garrison. The reorganizations converted companies to troops and battalions to squadrons, and made squadrons tactical formations as well as administrative ones. Commonwealth In the British Army and many other Commonwealth armies, a squadron is the Royal Armoured Corps counterpart of an infantry company or artillery battery. A squadron is a sub-unit of a battalion-sized formation (usually a regiment), and is usually made up of two or more troops. The designation is also used for company-sized units in the Special Air Service, Special Reconnaissance Regiment, Honourable Artillery Company, Royal Engineers, Royal Corps of Signals, Royal Army Medical Corps, the Royal Air Force Regiment and Royal Logistic Corps and in the defunct Royal Corps of Transport. Squadrons are commonly designated using letters or numbers (e.g. No. 1 Squadron or A Squadron), sometimes with alphabetical names (Ajax, Badger, ...) They are also designated according to their role: "519 Signal Squadron", "Tank Delivery Squadron". In some British Army units it is a tradition for squadrons to also be named after an important historical battle in which the regiment has taken part. For example, the Royal Armoured Corps Training Regiment assigns trainees to "Waterloo" Squadron, named in honour of the significance the cavalry played in the Allied forces' victory over Napoleon. In some special cases, squadrons can also be named after a unique honour which has been bestowed on the unit. France The modern French Army is composed of (foot soldiers including infantry and combat engineers) and (mounted soldiers such as armored cavalry units, and transportation units). Nowadays, the term (squadron) is used to describe a company () of mounted soldiers but, for a long time, a cavalry corresponded to an infantry battalion, both units grouping several companies